Re: [Qgis-user] A load of updates in OSGeo4W

[Alister Hood via QGIS-User]

A tip: use a new qgis profile if you try the new qt6 build.
Most plugins do not yet claim compatibility with it, so if you don't use a
new profile your plugins will be automatically disabled, then when you
reuse the qt5 build you'll need to reenable them all.
Also, be prepared to wait - it took a long time here to download the
updates.

Regards,
Alister

Date: Mon, 15 Apr 2024 01:02:46 +0200
> From: J?rgen E. Fischer 
> To: osgeo4w-...@lists.osgeo.org, qgis-user@lists.osgeo.org,
> qgis-develo...@lists.osgeo.org, grass-...@lists.osgeo.org
> Subject: [Qgis-user] A load of updates in OSGeo4W
> Message-ID: <20240414230246.rvykko63wunec...@norbit.de>
> Content-Type: text/plain; charset="utf-8"
>
> Hi there,
>
> I just uploaded an update to OSGeo4W.   It is basically a rebuild of
> everything
> with a newer compiler (Visual C++ 2022) and updates of almost all versions.
> The update should work cleanly and cause no visual changes.
>
> The main change is the move from Python 3.9.18 to 3.12.3.  But there's
> also an
> update to Qt 5.15.13, OpenSSL 3.   Qt6 was also added enabling an
> experimental
> build of QGIS master with Qt6. Based on that there is also an experimental
> version of QField.
>
> GDAL and PROJ also were updated to the latest version.
>
> The legacy GRASS 7 was removed because it doesn't support Python 3.12.
> GRASS 8
> was already available and QGIS switch to it long before this update.
>
> Please test and report.
>
>
> J?rgen
>
>
> More details in the commit message:
>
> A load of updates (fixes #788, #810, #816, #819, #820, #823, closes
> jef-n/OSGeo4W#21, refs qgis/QGIS#54491, qgis/QGIS#56499)
>
> Highlights:
>   Switched to Visual Studio 2022
>   Qt6 6.6.3, PyQt6 6.6.1
>   Qt5 5.15.13, PyQt5 5.15.10
>   Python 3.12.3
>   OpenSSL 3.0.13
>   PROJ 9.4.0
>   GDAL 3.8.5
>   qgis-qt6-dev based on Qt6 next to qgis-dev based on Qt5
>   experimental QField based on Qt6 / qgis-qt6-dev
>
> Details:
>   Removed:
> libjpeg (already replaced with libjpeg-turbo earlier)
> python3-clcache (replaced by ccache)
> python3-pyuv (dependency of python3-clcache)
>
>   Updated:
> apache 2.4.52 -> 2.4.58
> arrow-cpp 7.0.0 -> 15.0.2
> boost 1.74.0 -> 1.84.0
> brotli 1.0.9 -> 1.1.0
> curl 8.4.0 -> 8.6.0
> draco 1.5.6 -> 1.5.7
> exiv2 0.27.3 -> 0.28.2
> expat 2.2.10 -> 2.6.2
> ffmpeg 5.1 -> 6.1.1
> freetype 2.10.2 -> 2.13.2
> gdal 3.8.4 -> 3.8.5
> gpsbabel 1.8.0 -> 1.9.0
> grass 7.8.8 -> 8.3.2
> grass8 8.3.2 -> 99 (transitional; depends on grass)
> gsl 2.6 -> 2.7.1+
> hdf4 4.2.16 -> 4.3.0
> hdf5 1.14.0 -> 1.14.3
> kealib 1.4.14 -> 1.5.3
> lerc 3.0 -> 4.0.0
> libharu 2.3.0 -> 2.4.4
> libiconv 1.16 -> 1.17
> libjpeg-turbo 2.0.7-esr -> 3.0.2
> libjxl 0.8.1 -> 0.10.2
> libmysql 8.0.21 -> 8.2.0
> libosmium-devel 2.18.0 -> 2.20.0
> libpng 1.6.37 -> 1.6.43
> libtiff 4.5.1 -> 4.6.0
> libxml2 2.9.10 -> 2.12.5
> libxslt 1.1.34 -> 1.1.39
> libzip 1.7.3 -> 1.10.1
> lua 5.4.4 -> 5.4.6
> lz4 1.9.3 -> 1.9.4
> minizip-ng-devel 3.0.2 -> 4.0.4
> node 16.14.0 -> 20.11.1
> oci 19.11 -> 21.13
> ogdi 4.1.0 -> 4.1.1
> opencl 2.0.10 -> 2023.12.14
> openfyba-devel 20150103 -> 20240408
> openjpeg 2.4.0 -> 2.5.2
> openssl 1.1.1w -> 3.0.13
> osm2pgsql 1.8.1 -> 1.11.0
> osmium 1.15.0 -> 1.16.0
> pdal 2.6.0 -> 2.6.3
> poppler 23.07.0 -> 24.04.0
> proj 9.3.1 -> 9.4.0
> proj-data 1.16 -> 1.17
> python3 3.9.18 -> 3.12.3
> protobuf-devel 3.13.0 -> 25.3
> qca 2.3.1 -> 2.3.8
> qscintilla 2.13.4 -> 2.14.1
> qt5 5.15.3 -> 5.15.13
> qtkeychain 0.13.2 -> 0.14.2
> qwc2 20220311-671a6e7 -> 20240408-3d95409
> qwt 6.1.6 -> 6.2.0
> saga 7.8.2 -> 9.3.1
> saga9 9.2.0 -> 99 (transitional; depends on saga)
> snappy-devel 1.1.9 -> 1.1.10
> spdlog-devel 1.10.0 -> 1.13.0
> sqlite3 3.41.1 -> 3.45.1
> swig 4.0.2 -> 4.2.1
> thrift 0.16.0 -> 0.20.0
> transifex-cli 1.6.5 -> 1.6.10
> utf8proc 2.7.0 -> 2.9.0
> wxwidgets 3.2.1 -> 3.2.4
> xerces-c 3.2.3 -> 3.2.5
> xz 5.2.5 -> 5.4.5
> yarnpkg 1.22.17 -> 1.22.21
> zlib 1.2.12 -> 1.3.1
> zstd 1.4.5 -> 1.5.5
>
>   Updated Python extensions:
> python3-access 1.1.1 -> 1.1.9
> python3-affine 2.3.0 -> 2.4.0
> python3-alabaster 0.7.12 -> 0.7.16
> python3-argon2-cffi 20.1.0 -> 23.1.0
> python3-atomicwrites 1.4.0 -> 1.4.1
> python3-attrdict 2.0.1 -> python3-attrdict3 2.0.2
> python3-attrs 20.2.0 -> 23.2.0
> python3-autopep8 2.0.1 -> 2.1.0
> python3-babel 2.8.0 -> 2.14.0
> python3-backports.entry-points-selectable 1.1.0 -> 1.3.0
> python3-beautifulsoup4 4.9.3 -> 4.12.3
> python3-bleach 3.2.1 -> 6.1.0
> python3-certifi 2020.6.20 -> 2024.2.2
> python3-cffi 1.14.3 -> 1.16.0
> python3-cftime 1.2.1 -> 1.6.3
> python3-chardet 3.0.4 -> 5.2.0
> python3-click 7.1.2 -> 8.1.7
> python3-cligj 

Re: [Qgis-user] Calculate upslope catchment areas for multiple points?

[Alister Hood via QGIS-User]

If the outlet points are correctly positioned on the stream network (i.e.
you don't need to "snap" them to the streams) and you're able to install
and run GRASS addons, you should be able to just use r.accumulate with the
outlet= option to specify the layer of outlet points, and the subwatershed=
option to tell it to calculate watersheds.
If you want to run it as a QGIS processing algorithm, you'll need to create
a description file.  This is mine, but you don't need most of it if you're
not wanting to use other features of r.accumulate.:

r.accumulate
Calculates weighted flow accumulation, subwatersheds, stream networks, and
longest flow paths using a flow direction map.
Raster (r.*)
QgsProcessingParameterRasterLayer|direction|Drainage direction input
raster|None|False
*QgsProcessingParameterEnum|format|Format of drainage direction input
raster|auto;degree;45degree|False|0|False
*QgsProcessingParameterNumber|threshold|Minimum flow accumulation for
streams|QgsProcessingParameterNumber.Integer|4000|True|4000|None
*QgsProcessingParameterRasterLayer|input_accumulation|Flow Accumulation
input raster|None|True
*QgsProcessingParameterRasterLayer|input_subaccumulation|Flow
subaccumulation input raster|None|True
*QgsProcessingParameterBoolean|-n|Use negative flow accumulation for likely
underestimates|False
*QgsProcessingParameterBoolean|-0|Use 0s instead of nulls for no flow
accumulation (faster)|False
*QgsProcessingParameterBoolean|-a|Calculate accumulated longest flow
paths|True
*QgsProcessingParameterBoolean|-c|Delineate streams across confluences|False
*QgsProcessingParameterBoolean|-r|Use recursive algorithms|False
QgsProcessingParameterPoint|coordinates|Coordinates of outlet
point|None|True
QgsProcessingParameterFeatureSource|outlet|Outlet points input vector
layer|0|None|True
QgsProcessingParameterRasterDestination|accumulation|Flow accumulation
output raster|None|True
QgsProcessingParameterRasterDestination|subaccumulation|Flow
subaccumulation output raster|None|True
QgsProcessingParameterRasterDestination|subwatershed|Watersheds output
raster|None|True
QgsProcessingParameterVectorDestination|stream|Streams output vector
layer|QgsProcessing.TypeVectorLine|None|True
QgsProcessingParameterVectorDestination|longest_flow_path|Longest flow path
output vector layer|QgsProcessing.TypeVectorLine|None|True

On Mon, 15 Jan 2024 at 09:01,  wrote:

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> Today's Topics:
>
>1. Calculate upslope catchment areas for multiple points? (Ben Jones)
>2. Re: Calculate upslope catchment areas for multiple points? (kirk)
>
>
> --
>
> Message: 1
> Date: Sun, 14 Jan 2024 17:15:58 +1100
> From: Ben Jones 
> To: Qgis 
> Subject: [Qgis-user] Calculate upslope catchment areas for multiple
> points?
> Message-ID: <0734d400-0095-4dab-8c53-853157b55...@iprimus.com.au>
> Content-Type: text/plain;   charset=utf-8
>
> Hello All,
>
> I have used SAGA to generate channel networks and r.watershed to generate
> catchment sub-basins from Copernicus 30 m DEM data to assist with planning
> a stream sediment sampling program. Once samples are collected I would like
> to generate polygons that define the upslope area for each sample point.
>
> I understand that this can be done using SAGA Terrain Analysis ?Upslope
> area? tool that requires manually copying and pasting the X and Y
> coordinates for each sample point (one point at a time which works but is
> not practical for 100?s of samples, or in batches which is still not ideal
> and doesn?t appear to work?).
>
> Is there an easy way to import a point file with multiple points (100?s of
> points) to SAGA or another tool to automatically calculate upslope
> catchment areas for each of the points?
>
> I have come across two potential solutions:
>
> 1) ?Qgis SAGA Upslope Area for several points automation?:
>
> https://gis.stackexchange.com/questions/342333/qgis-saga-upslope-area-for-several-points-automation
> 2) ?Snap pour points and delineate multiple catchments in QGIS?:
> https://www.youtube.com/watch?v=Hqc_1CMadhA
>
> However, both are three years old and it appears there are complications
> using both these methods in newer versions of QGIS3. Are there alternative
> methods?
>
> I am using QGIS 3.28.11a on macOS Monterey.
>
> Thanks,
>
> Ben
>
> --
>
> Message: 2
> Date: Sun, 14 Jan 2024 09:48:54 -0400
> From: kirk 
> To: Ben Jones , Qgis
> 
> Subject: Re: 

Re: [Qgis-user] How to convert qml style file from version

[Alister Hood via QGIS-User]

I wasn't aware that you can work around the backward compatibility problem
by saving style files, but if that works you might find a processing
algorithm to save default style could save you a lot of time.  The
geoproc.com processing algorithms plugin has one, as well as another for
saving and loading multiple styles.
And I posted another algorithm to save default style at:
https://github.com/qgis/QGIS/issues/41471#issuecomment-1588467276

Date: Mon, 8 Jan 2024 15:16:31 +
> From: Richard McDonnell 
> To: Rigola C Jaume INFORMACIO DE BASE 
> Cc: "qgis-user@lists.osgeo.org" 
> Subject: Re: [Qgis-user] How to convert qml style file from version
> 3.28.6 to 3.16.14
> Message-ID:
> <
> db9p189mb20515fd46de4be71fb18dbaa99...@db9p189mb2051.eurp189.prod.outlook.com
> >
>
> Content-Type: text/plain; charset="us-ascii"
>
> Hi Jaume,
> I'm making the assumption that your styling is saved in the Project File
> and not as a Style for the Layer itself.
> Might I suggest that you create a default style for each layer, this can
> easily be done by going to the Layer Properties and clicking on the Style
> button on the bottom Left and selecting Save as Default. This will result
> in a default style for the Layer so it doesn't matter what version of QGIS
> you use, or indeed what project you load the layer into, it will use the
> default style. You can also manually do this, by saving the style with the
> same name as the dataset.
>
> The same can be done for all layers, Vector or Raster. It will even do it
> for PostGIS Layers, saving the style in a new table called style in the
> public schema in your Database.
>
> I hope the above helps.
> Kind Regards,
>
> Richard
>
>
>
>
> --
> Richard McDonnell MSc GIS, FME Certified Professional
> FRM Data Management
>
> --
> Oifig na nOibreacha Poibl?
> Office of Public Works
>
> Sr?id Jonathan Swift, Baile ?tha Troim, Co na M?, C15 NX36
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> --
> MSc GIS, FME Certified Professional
>
> --
> Oifig na nOibreacha Poibl?
> Office of Public Works
>
> Sr?id Jonathan Swift, Baile ?tha Troim, Co na M?, C15 NX36
> Jonathan Swift Street, Trim, Co Meath, C15 NX36
> --
> M +353 87 688 5964 T +353 46 942 2409
> https://https://gov.ie/opw
>
> --
> Email Disclaimer:
> https://www.gov.ie/en/organisation-information/439daf-email-disclaimer/<
> https://www.opw.ie/en/disclaimer/>
> From: QGIS-User  On Behalf Of Rigola C
> Jaume INFORMACIO DE BASE via QGIS-User
> Sent: 08 January 2024 13:13
> To: 'qgis-user@lists.osgeo.org' 
> Subject: [Qgis-user] How to convert qml style file from version 3.28.6 to
> 3.16.14
>
> For reasons that are not relevant to this discussion I have two versions
> of QGIS installed on my Desktop (3.16.14-Hannover & 3.28.6-Firenze).
>
> I have realised that when a project is saved at 3.28.6-Firenze version,
> the symbology styles are lost if opened with QGIS 3.16.14-Hannover. I've
> browsed for solutions, and I read that that's an issue since version 3.22,
> but I couldn't find a way to solve it.
>
> Does anyone know how to save the layer stlyles on 3.28.6-Firenze  so they
> can be recovered on 3.16.14-Hannover? (Maybe a version conversor, or a QML
> file conversor)
>
> Many thanks in advance,
>
> Jaume
>
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Re: [Qgis-user] What is the r coordinate?

[Alister Hood via QGIS-User]

Thanks, I should have found that, but was tripped up by
https://github.com/qgis/QGIS-Website/issues/961 and not reading carefully
enough.

I wondered if it was a radius, but I thought if so I would be able to type
a radius in to turn a vertex into a curve - I was mainly confused
because digitising curves doesn't work here for CompoundCurve and
MultiCurve memory layers (they are digitised as if the provider doesn't
support curves; maybe I have a plugin that is causing this problem).
Now that I've tried a CurvePolygon layer it all becomes clear.  And I see
that to convert between a vertex and a curve you select it with the node
tool and press 'o'.

Thanks.

On Tue, 12 Dec 2023 at 12:56, Emma Hain  wrote:

> Hi Alister
> The 'r' coordinate is for the radius
>
> https://docs.qgis.org/3.28/en/docs/user_manual/working_with_vector/editing_geometry_attributes.html?highlight=vertex%20editor#the-vertex-editor-panel
>
> Cheers
> Em
>
> On Tue, 12 Dec 2023 at 09:22, Alister Hood via QGIS-User <
> qgis-user@lists.osgeo.org> wrote:
>
>> The vertex editor panel always seems to include a column for an r
>> coordinate.  It always seems to be empty and anything I try to type in it
>> is thrown away.
>> What is it?  I guess I haven't been looking carefully enough, but I can't
>> seem to find it explained anywhere.
>>
>> You can see a screenshot in the docs at:
>>
>> https://docs.qgis.org/3.34/en/docs/training_manual/create_vector_data/create_new_vector.html?highlight=vertex%20editor#moderate-fa-using-vertex-editor-table
>>
>> Thanks.
>> ___
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>
>
> --
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> e...@north-road.com / 0414 512 782
> [image: https://north-road.com]
> *North Road*
> Cartography • Development • Spatial Analysis
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[Qgis-user] What is the r coordinate?

[Alister Hood via QGIS-User]

The vertex editor panel always seems to include a column for an r
coordinate.  It always seems to be empty and anything I try to type in it
is thrown away.
What is it?  I guess I haven't been looking carefully enough, but I can't
seem to find it explained anywhere.

You can see a screenshot in the docs at:
https://docs.qgis.org/3.34/en/docs/training_manual/create_vector_data/create_new_vector.html?highlight=vertex%20editor#moderate-fa-using-vertex-editor-table

Thanks.
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Re: [Qgis-user] Create contours algorithm does not work

[Alister Hood via QGIS-User]

>
> Date: Wed, 4 Oct 2023 16:44:38 +0200
> From: Roland Spielhofer 
> To: QGIS User 
> Subject: [Qgis-user] Create contours algorithm does not work
> Message-ID:
>
>  >
>
> Content-Type: text/plain; charset="us-ascii"
>
> An HTML attachment was scrubbed...
> URL: <
> http://lists.osgeo.org/pipermail/qgis-user/attachments/20231004/22022935/attachment-0001.htm
> >
>

Hi Roland,

I note that your gdalinfo output does not include the usual "Coordinate
System is:" section after the "Size" line.
You will probably find it works as expected if you rectify this, by
specifying a projection using the "assign projection" or "translate
(convert format)" QGIS processing tools.

I tend to have the same problem when working with "Arc/Info ASCII Grid"
files produced by 12D - in this case gdalinfo prints a "Coordinate System
is:" section but it just looks like this, instead of actually having the
coordinate system details:

Coordinate System is `'

I simply use "translate (convert format)" to convert to a geotiff and
specify the correct coordinate system, and I have no problem generating
contours from that geotiff.


PS I was only able to read your email after clicking the link for the
"scrubbed" html attachment, and ignoring all the html code - see above.  If
you want everybody on the list to actually read your emails you should
configure your email client to also send plain text email instead of just
sending html email.

Regards,
Alister
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Re: [Qgis-user] consultation (Juan Pablo Moreno Sebastian)

[Alister Hood via QGIS-User]

Hi Juan,
That sounds like it might be what this GRASS addon does: r.prominence -
GRASS GIS manual (osgeo.org)

Does it do what you intend your plugin to do?  This discussion might also
help: Re: [GRASS-user] r.prominence (mail-archive.com)


QGIS includes GRASS GIS and a processing provider allowing us to run GRASS
modules in QGIS, so if that does what you want, you should probably look at
writing an algorithm description for the QGIS processing provider to be
able to use it.  That way you are using an existing tool and don't have to
write the python code.  You can probably copy another algorithm description
easily enough, but see the documentation here (the version in your QGIS
install is probably very out of date - I just updated it recently):
QGIS/python/plugins/grassprovider/grass7.txt
at master · qgis/QGIS · GitHub


I have done some work to allow users to install GRASS addons and create
algorithm descriptions for them, so hopefully this will be available in a
QGIS release soon (my second pull request hasn't been approved and merged
yet).
See Add support for GRASS addons · Issue #53048 · qgis/QGIS (github.com)


If you want to write algorithm descriptions for GRASS addons in the
meantime, you will need to install them in the QGIS installation directory,
which may require administrator rights on your computer.

Regards,
Alister

On Thu, 22 Jun 2023 at 06:44,  wrote:

> Send QGIS-User mailing list submissions to
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> than "Re: Contents of QGIS-User digest..."
>
>
> Today's Topics:
>
>1. consultation (Juan Pablo Moreno Sebastian)
>
>
> --
>
> Message: 1
> Date: Wed, 21 Jun 2023 18:42:57 +
> From: Juan Pablo Moreno Sebastian 
> To: "qgis-user@lists.osgeo.org" 
> Subject: [Qgis-user] consultation
> Message-ID:
> <
> am7pr09mb3750218ec65eba100c6c66cbbe...@am7pr09mb3750.eurprd09.prod.outlook.com
> >
>
> Content-Type: text/plain; charset="utf-8"
>
> Good afternoon.
>
> I'm Juan Pablo Moreno.
>
> I have to develop a plugin for QGIS that calculates the orographic
> prominence of the hills and then goes on to classify the points.
> I will now explain my idea more slowly.
>
> 1? The plugin must load an MDT.
> 2? Locate hills by analysis of each cell of the MDT and those of its
> surroundings. I locate a cell and if the surroundings are of lower level it
> will be a possible hill, the holes would be the other way around.
> 3? Calculation of the orographic prominence of each hill.
> ??
> ??Prominence:
> ??The prominence of a mountain is a notion used in orography for the
> classification of mountains. It is defined as the minimum slope that must
> be descended from the top of a mountain to ascend to a higher one. The more
> prominent a mountain is, the more it will stand out among those around it,
> regardless of its altitude.
> ?
> ??Prominence = mountain altitude - altitude minimum point
>
> ??[cid:134c04d1-db0c-4fb6-becb-4ec2ae026d73]
>
> To calculate the prominence, a program would have to be developed that did
> something similar to the following:
>
> An analogy widely used to explain these relationships and, incidentally,
> to illustrate a possible procedure for detecting hills and hills, alludes
> to the myth of the universal flood. We imagine that the earth has been
> flooded under a thick blanket of water that covers it completely, without
> leaving a single piece of land emerged. After the end of the flood, the
> evaporation of water causes small islands to begin to emerge. The first to
> appear is the summit of Everest and the following, other summits of the
> Himalayas. As the sea level drops due to evaporation, the surface area
> occupied by each island increases and there comes a time when the level is
> low enough for the island to merge with another land mass through some
> isthmus that has been exposed.  The exact point at which the connection of
> two islands occurs coincides with a col and is associated with the summit
> of the lower altitude island to determine its prominence. The value is
> obtained from the difference in height between the
>   hill and the associated hill, as can be seen from its definition.
>
> We apologize for the inconvenience.
> If you find the subject interesting or were so 

Re: [Qgis-user] Display of non-axis-aligned pixels

[Alister Hood via QGIS-User]

>
> Date: Fri, 10 Mar 2023 13:52:42 +
> From: Daniel Evans 
> To: qgis-user@lists.osgeo.org
> Subject: [Qgis-user] Display of non-axis-aligned pixels
> Message-ID:
> <
> cannaqay0-e_hio8dww88zo-ahi4gsjsmterlbe0dth_xqps...@mail.gmail.com>
> Content-Type: text/plain; charset="UTF-8"
>
> Hello,
>
> I have some raster data where the pixels are not
> coordinate-system-aligned - i.e. the geotransform has significant
> diagonal components. `gdalinfo` reports:
>
> GeoTransform =
>   444048.6420808117, 6.302162394202463, 6.152691784443768
>   5417729.777950762, 4.143808265940849, -3.26376570161891
>
> When viewing the raster in QGIS, I am surprised to find that it
> displays the pixels as north-aligned. An example is here:
> https://i.imgur.com/i6y1gtM.png
>
> If I make nodata visible, it seems that QGIS is displaying an
> axis-aligned image corresponding to the bounding box of my original
> image (data in white, nodata in black). Screenshot here:
> https://i.imgur.com/ZQJ6Mi5.png
>
> This behaviour surprised me, as QGIS is capable of showing pixels at a
> slant in some circumstances. For example, if I set QGIS to render
> using a different UTM zone, the pixels are slanted - although in this
> case, it's applying a second rotation on top of the north-aligning
> rotation it's already applying: https://i.imgur.com/LoC7jyk.png
>
> 1. Is it possible to have QGIS display a raster without resampling the
> pixels to axis-aligned?
>

I don't believe so.


> 2. Is there a reason for making this the default (or only) behaviour?
> It caused quite some confusion when trying to diagnose a
> geotransform-related issue elsewhere.
>

Several bug reports have been filed about this over the years, (e.g.
https://github.com/qgis/QGIS/issues/23760, which should really be reopened,
unless someone files a new ticket instead), and no one has ever tried to
say it "should" be this way.  I'm no expert, but I presume the problem is
simply that no one has been both motivated and able to do the work to fix
it, or to fund someone to do it.
I'm not even sure if a fix would involve work on QGIS itself, or gdal, or
perhaps both.

Regards,
Alister
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Re: [Qgis-user] Watershed - Catchment area upstream of a point

[Alister Hood via Qgis-user]

>
> Date: Wed, 9 Nov 2022 11:04:02 +1300
> From: "Tony Shepherd \(FarmMaps NZ\)" 
> To: "'Qgis Users List'" 
> Subject: [Qgis-user] Watershed - Catchment area upstream of a point
> Message-ID: <003101d8f3be$04ed8380$0ec88a80$@farmmaps.nz>
> Content-Type: text/plain; charset="us-ascii"
>
> Hi All
>
>
>
> I'm wanting to use a DEM/DTM to automatically map the watershed/catchment
> area upstream of a known point.
>
>
>
> After a bit of reading, this appears to be a not-so-simple task but
> suggestions are to use the "Upslope Area" algorithm.
>
>
>
> In my case, the program fails to finish running, and the message window
> shows the following error:
>
>  SAGA Version: 7.8.2 (64 bit)
>  Error: tool needs graphical user interface [Upslope Area]
>
>  C:\Users\Tony\Documents>exit
>
>
>
> Questions:
>
> *   Does anybody know what that error means?
> *   Is there another tool/method that is preferable to use?
>

Yes, Grass is preferable because the integration with QGIS works reliably.
It doesn't necessarily need more than two steps:

1. run r.watershed and output drainage direction and stream segments.  The
key input parameter is "Minimum size of exterior watershed basin".  You
probably also want to output unique label (a catchment map) and flow
accumulation (number of cells that drain through each cell").
2. unless your point of interest happens to be at the bottom of one of the
catchments already mapped, run r.water.outlet,  with the drainage direction
raster as input.  When doing this, view the stream segments layer - if your
point of interest is not exactly on a stream segment you need to specify
instead a nearby point that is on a stream segment.

Regards,
Alister
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Re: [Qgis-user] Adding alpha band to raster

[Alister Hood]

Personally I would create a .vrt using gdal_translate, with these
"additional command line parameters":

 -b 1 -b 2 -b 3 -b 1 -colorinterp_4 alpha -scale_4 0 255 255 255

This assumes 8 bit RGB input, but you can adapt it for something else.
It does work even before georeferencing.
But depending on your workflow it might be easier just to convert to RGBA
with something like imagemagick, or to open in MS Paint and save as
PNG, which silently adds an alpha channel.

Regards,
Alister

> Date: Mon, 24 Jan 2022 10:33:56 -0400
> From: Kirk Schmidt 
> To: qgis-user@lists.osgeo.org
> Subject: Re: [Qgis-user] Adding alpha band to raster
> Message-ID: <46938c47-4f37-44ac-5f96-468f29258...@nortekresources.com>
> Content-Type: text/plain; charset=UTF-8; format=flowed
>
> Hi Nicolas:
>
> I just had an idea, why not use gdal directly??? I know gdalwarp has a
> -dstalpha switch to code null data Assuming this is what you want the
> alpha band for)
>
> Kirk
>
>
> On 1/21/2022 6:06 PM, Nicolas Cadieux wrote:
> > Hi,
> >
> > I don't see it in the current processing algorithms. I see lot's or
> > r.out... but not that one:(? I guess I could do it in Grass...
> >
> > Thanks for the idea!
> >
> > Nicolas
> >
> > On 2022-01-21 1:37 p.m., Kirk Schmidt wrote:
> >> Hi Nicholas:
> >>
> >> Try r.out.gdal
> >>
> >> https://grass.osgeo.org/grass78/manuals/r.out.gdal.html
> >>
> >> Kirk Schmidt
> >>
> >>
> >> On 1/21/2022 2:25 PM, Nicolas Cadieux wrote:
> >>> Hi,
> >>>
> >>> What is the easiest way, in QGIS3, to add an alpha band to a
> >>> raster?? Alpha bands are handy with the georeferencer. Currently, I
> >>> am just adding it in GIMP before I start the georeferencer.
> >>>
> >>> Thanks
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Re: [Qgis-user] QGIS 3.22 - GRASS Init-Error

[Alister Hood]

>
> Date: Mon, 8 Nov 2021 22:31:30 -0300
> From: Martin Bittens 
> To: qgis-user@lists.osgeo.org
> Subject: [Qgis-user] QGIS 3.22 - GRASS Init-Error
> Message-ID: <8f3b2b78-bfc8-1040-bf42-873b8ec46...@gmx.de>
> Content-Type: text/plain; charset=UTF-8; format=flowed
>
> Hello QGIS User Group!
>
> Today I did the update from QGIS 3.20 to 3.22 using the Win10 64bit?
> installer 'osgeo4w-setup.exe' provided on the QGIS homepage. When I
> opened the new QGIS version I received the following warning:
>
>  ?GRASS init error : Problem in GRASS initialization, GRASS provider and
> plugin will not work : Module built against version
> 2021-10-11T09:56:15+00:00 but trying to use version
> 2021-11-01T10:26:16+00:00. You need to rebuild GRASS GIS or untangle
> multiple installations.
>
> Obviously, something does not fit. But what?
>
> Are there any ideas? I also did the update from 3.16.11 to 3.16.13 (the
> LTR versions) and did not this problem.
>
>
> Thank you
>
>
> Martin
>

I installed 3.22 today using the standalone Windows installer, not the
OSGEO4W installer, and I got the same error on startup.
Both the Grass Plugin and Provider show in the plugin manager as loaded,
but I haven't tried using them to confirm it is truly broken.
I note that the Grass processing algorithms do still work.

Regards,
Alister
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Re: [Qgis-user] Exporting to UE4

[Alister Hood]

I haven't tried getting Unreal Engine and doing anything with it, but did a
quick search on this, and I think there is some confusion here.
"DEM" is a generic term, but some software uses it to refer to particular
file formats i.e. with a .dem file extension.  What this format actually is
depends on the particular software, as there is more than one.  Some
software uses a .dem extension for the ascii grid format, instead of the
more common .asc file extension.
>From what I saw I think that is a red herring in this case.  It didn't look
like you actually need one of those particular filetypes.  They instead
talk about "RAW-16 or TIF-16", and I guess the latter is a geotiff with
UInt16 data type.  They also have some recommendations about scaling or
translating the data vertically.
I would have thought if you looked you'd be able to find a tutorial to make
it easy for yourself.

Regards,
Alister


> From: Nicolas Cadieux 
> To: shippingcrab 
> Cc: qgis-user@lists.osgeo.org
> Subject: Re: [Qgis-user] Exporting to UE4
> Message-ID: 
> Content-Type: text/plain; charset="utf-8"
>
> Hi,
> Try the Gdal translate module and select .dem as export format.  I imagine
> you .tiff file already has elevation data?
>
>
> https://docs.qgis.org/3.16/en/docs/user_manual/processing_algs/gdal/rasterconversion.html?highlight=translate#translate-convert-format
>
> Nicolas Cadieux
> https://gitlab.com/njacadieux
>
> > Le 19 juin 2021 ? 19:09, shippingcrab  a ?crit :
> >
> > ?
> >
> > So I just recently started using QGIS for turning .tiff files into a
> .dem file that can be read through Unreal Engine for height map generating
> and I have no Idea how to, does anyone know?
>
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Re: [Qgis-user] Is this a bug in the vector clipping algorithm?

[Alister Hood]

OK, I thought I had tried "Check validity" with both QGIS and GEOS methods,
but I must have got confused and only used GEOS method, which doesn't
detect an error.
The first tool I tried was actually "Fix geometries", which also thinks the
geometries are valid.  Maybe fix geometries uses GEOS and needs to be
enhanced with a QGIS method.
It seems strange for other algorithms like "clip" to do more fixing than
"fix geometries", especially in a case like this where you would think the
feature could be clipped without any "fixing".

Thanks.

Date: Tue, 1 Jun 2021 02:45:51 -0700 (MST)
> From: Andrea Giudiceandrea 
> To: qgis-user@lists.osgeo.org
> Subject: Re: [Qgis-user] Is this a bug in the vector clipping
> algorithm?
> Message-ID: <1622540751842-0.p...@n6.nabble.com>
> Content-Type: text/plain; charset=us-ascii
>
> Alister Hood-2 wrote
> > I haven't been able to find a tool for validating or repairing geometries
> > that thinks there is a problem with the original geometry
>
> Hi Alister,
> what tool have you used to check the geometry?
>
> Have you tried to use the Geometry Checker core plugin (Vectror->Check
> Geometries) or the "Check validity" (qgis:checkvalidity) processing tool
> (with the QGIS method)?
> They both report errors: "duplicate node", "self contact", "duplicate
> nodes".
>
> Also the ArcMap/ArcGIS Check Geometry tool reports "self intersections".
>
> Anyway it seem the QGIS Clip tool does a "sanitize" of the intersection
> result (always converting to Multi Type).
>
> Regards.
>
> Andrea Giudiceandrea
>
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[Qgis-user] Is this a bug in the vector clipping algorithm?

[Alister Hood]

Hi everyone,

I found that if a line touches itself, if I use the vector overlay "clip"
algorithm on that layer, the feature gets broken up into 3 pieces (I can
tell by running it through the "multipart to singleparts" algorithm).

See the screenshot below of some example inputs, and I've attempted to
attach the layers.  If I run the line layer through "multipart to
singleparts" it produces a layer with only one feature.  But if I use the
polygon to clip the line layer, and then run it through "multipart to
singleparts" it gets split at the point where it touches itself,  into
three pieces.

I haven't been able to find a tool for validating or repairing geometries
that thinks there is a problem with the original geometry, so I think this
is a bug with the clip algorithm.  Should I file a ticket?

Or should the original geometry be considered invalid, so I can't expect
the algorithm to preserve it as a single feature?  If that's the case do we
need a better tool for validating or repairing geometries, which can
identify geometries with this problem?).
[image: image.png]

Regards,
Alister
<>
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Re: [Qgis-user] Do you have any QGIS plugin feature requests?

[Alister Hood]

Hi Calvin,

Date: Mon, 13 Jul 2020 15:38:45 -0400
> From: C Hamilton 
> To: qgis-user ,  qgis-developer
> 
> Subject: [Qgis-user] Do you have any QGIS plugin feature requests?
> Message-ID:
>  reh9fmgukqavdoiv...@mail.gmail.com>
> Content-Type: text/plain; charset="utf-8"
>
> Hi Everyone,
>
> I find that I have extra time on my hands so I would like to know if anyone
> has any feature requests for any of my plugins.
>
> Lat Lon Tools
> https://plugins.qgis.org/plugins/latlontools/
>
> Shape Tools
> https://plugins.qgis.org/plugins/shapetools/
>
> KML Tools
> https://plugins.qgis.org/plugins/kmltools/
>
> Lock Zoom to Tile Scale
> https://plugins.qgis.org/plugins/lockzoom/
>
> My criteria for picking up a new effort would be that it benefits a large
> number of QGIS users, is somewhat related to my existing plugins, minimal
> to moderate development, and sounds like a fun project. I would also
> consider something not related to one of the plugins if I think it would be
> worthwhile and looks like it would be fun to work on.
>
> Do you have any suggestions or requests?
>
> Thanks,
>
> Calvin
>

I don't often create print layouts, but when I did recently I was surprised
I couldn't find a good tool to create coverage layers to use with the Atlas
feature in the layout composer.
Perhaps someone else knows of a tool and I just couldn't find it?  There is
an old plugin for QGIS 2.x, but even it had plenty of room for improvement.
In any case, this might be similar enough to your Shape Tools plugin that
you would consider it.

Thanks,
Alister
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Re: [Qgis-user] Hillshade Rough Blocks for 1m Rasters?

[Alister Hood]

It does shade the pixel, but it also shades the edges unless the layer is
being reprojected.
There is a ticket for this, but you can workaround it by enabling
resampling for that layer.


> Date: Mon, 29 Jun 2020 16:57:11 -0400
> From: 
> To: 
> Subject: [Qgis-user] Hillshade Rough Blocks for 1m Rasters?
> Message-ID: <024601d64e57$dcbddd00$96399700$@graytechsoftware.com>
> Content-Type: text/plain; charset="utf-8"
>
> If I use a 1m resolution raster on a CRS in meters and render it as a
> hillshade, it appears to shade the edges of each pixel instead of the pixel
> itself:
>
> If I use, a raster made in a CRS with ft for units displayed on a CRS in
> meters, it renders each pixel smoothly:
>
> How do I get the hillshade to render smoothly always, especially in a CRS
> in
> meters when using metric units for the raster?
>
> Thank you, Chris
>
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Re: [Qgis-user] export to dxf problem

[Alister Hood]

>
> Date: Tue, 12 Nov 2019 09:33:46 +0200
> From: Boaz Bar Ilan 
> To: Matthias Kuhn 
> Cc: qgis-user 
> Subject: Re: [Qgis-user] export to dxf problem
> Message-ID:
> <
> cap+w7xtfbcdbdhlsj6ixw0w5dujeue84h4vzuosrjfextma...@mail.gmail.com>
> Content-Type: text/plain; charset="utf-8"
>
> What happen is that when importing back the dxf file to the qgis it appear
> as x entities and appear with not the right crs and so i see nothing. And
> then in changing again the crs  ( to what i saved it at the first place ) i
> see it fine.
> But the sane file on cad is aot seen .
> I hope thats cane clear
> Boaz
>

Hi Boaz, sorry if you already said, I haven't gone back to check the whole
thread: can you confirm the problem isn't just that the cad entities are
the same as the background colour in your cad?  Can you try changing the
background colour? Or zooming extents and drawing a selection box filling
the whole window?

Regards,
Alister

>
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Re: [Qgis-user] how to fix the raster calculator

[Alister Hood]

>
> Hi all,
> I'm using a QJIS 3.4 under window 10.
> I have issue with the raster calculator tool located in raster analysis
> section of the processing tool.
> After calculations the output layers are not visible no matter the data i'm
> using.
> I've already uninstall and reinstall the software and it is still doing the
> same thing.
> How could I fix it?
> Thanks for your advices
> --
> Regards,
> Maixent
>

Hi, try 3.6 - you might find it works fine.  It was very buggy in previous
versions, including 3.4, although I'm not sure if it is fixed in the latest
version of 3.4

Regards,
Alister

>
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Re: [Qgis-user] Debian/Ubuntu repositories on qgis.org - https vs http

[Alister Hood]

Hi again,

On 31 January 2018 at 19:45, Richard Duivenvoorde <rdmaili...@duif.net>
wrote:

> On 30-01-18 23:58, Alister Hood wrote:
> > Hi everyone,
> > I followed the instructions
> > at https://qgis.org/en/site/forusers/alldownloads.html#debian-ubuntu to
> > install from https://qgis.org/ubuntugis, and I found that apt-get update
> > gave me "handshake failed" errors unless I used http instead of https.
> > This might be because I am testing under WSL, so not really a normal
> > linux environment, but I just wanted to check - does https normally work
> > for people?
>
> Hi Alister,
>
> https://qgis.org/ubuntugis/ is being served via Cloudflare, and you get
> a https certificate via them.
>
> if you use: https://ubuntu.qgis.org/ubuntugis/ you do NOT go via
> Cloudflare, can you check if that works for you. (and if  maybe do a
> pull request to fix docs?)
>

It seems Richard is right - https://ubuntu.qgis.org/ubuntugis/ works and
https://qgis.org/ubuntugis/ does not.
But Jürgen reported that it does work for him, which is perplexing.

When I installed again later in the day (for a later version of Ubuntu),
from http://qgis.org/ubuntugis-nightly/, I was having problems with the
packages downloading quite slowly or timing out - I guess the server was
overloaded. Perhaps the docs should mention both https://ubuntu.qgis.org/
ubuntugis/ and http://qgis.org/ubuntugis/ if they are on different servers.

Regards,
Alister
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Re: [Qgis-user] Debian/Ubuntu repositories on qgis.org - https vs http

[Alister Hood]

On a related matter, if anyone is able to edit
https://wiki.ubuntu.com/UbuntuGIS, there is a critical dead link at the
bottom: http://www.qgis.org/wiki/Download#Ubuntu
I guess it needs to be replaced with
https://qgis.org/en/site/forusers/alldownloads.html#debian-ubuntu

Regards,
Alister

On 31 January 2018 at 11:58, Alister Hood <alister.h...@gmail.com> wrote:

> Hi everyone,
> I followed the instructions at https://qgis.org/en/site/
> forusers/alldownloads.html#debian-ubuntu to install from https://qgis.org/
> ubuntugis, and I found that apt-get update gave me "handshake failed"
> errors unless I used http instead of https.
> This might be because I am testing under WSL, so not really a normal linux
> environment, but I just wanted to check - does https normally work for
> people?
>
> Thanks,
> Alister
>
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[Qgis-user] Debian/Ubuntu repositories on qgis.org - https vs http

[Alister Hood]

Hi everyone,
I followed the instructions at
https://qgis.org/en/site/forusers/alldownloads.html#debian-ubuntu to
install from https://qgis.org/ubuntugis, and I found that apt-get update
gave me "handshake failed" errors unless I used http instead of https.
This might be because I am testing under WSL, so not really a normal linux
environment, but I just wanted to check - does https normally work for
people?

Thanks,
Alister
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[Qgis-user] Questionnaire about QGIS use and funding

[Alister Hood]

Hi everyone, my girlfriend is doing some market research for a course 
she is doing.  It is a short survey basically about your use of QGIS, 
and ways you fund or would consider funding development.
It is 13 questions, but six are just demographic, so it shouldn't take 
too long.  If you would take a couple of minutes to answer it that would 
be much appreciated.


The survey is at
https://docs.google.com/forms/d/1-lbp-buRXekIDQC3W8vmRQSh3D0IR_ArB_zJBDwxAvA/viewform
Results will be visible at
https://docs.google.com/forms/d/1-lbp-buRXekIDQC3W8vmRQSh3D0IR_ArB_zJBDwxAvA/viewanalytics

Apologies for not consulting about this survey first - unfortunately 
time is short.  She'll have to look at the responses obtained in the 
next five days or so, but I think it will probably be good to leave the 
survey open for longer to get more results (if there is a good number 
hopefully the information will be useful to the community).


Thanks,
Alister
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Re: [Qgis-user] Questionnaire about QGIS use and funding

[Alister Hood]

Oh - a list of the questions would be handy for anyone looking at the 
results:

1. When did your organisation start using QGIS?
2. What are your main uses of QGIS? (select as many as apply)
3. What would you consider spending money on to support your use of QGIS?
4. Are there any particular aspects of QGIS development which you would 
like to support?
5. What factors would drive your choice of supplier for QGIS development 
or support services?
6. How much money do you spend on QGIS development or support services 
per year? (1 USD is about 0.74 Euro or 0.59 GBP)
7. How much money would you consider spending on QGIS development or 
support services per year? (include all services provided by external 
suppliers e.g. training)
8. If you currently spend less than you would consider spending, why is 
this?

9. What is the nature of your organisation?
10. What is the nature of your work? (select as many as apply)
11. Where is your organisation located? (select as many as apply)
12. How many employees (or volunteers) in your organisation?
13. How many of the employees would use QGIS in a typical month?

Alister Hood wrote, On 14/06/14 02:12:
Hi everyone, my girlfriend is doing some market research for a course 
she is doing.  It is a short survey basically about your use of QGIS, 
and ways you fund or would consider funding development.
It is 13 questions, but six are just demographic, so it shouldn't take 
too long.  If you would take a couple of minutes to answer it that 
would be much appreciated.


The survey is at
https://docs.google.com/forms/d/1-lbp-buRXekIDQC3W8vmRQSh3D0IR_ArB_zJBDwxAvA/viewform 


Results will be visible at
https://docs.google.com/forms/d/1-lbp-buRXekIDQC3W8vmRQSh3D0IR_ArB_zJBDwxAvA/viewanalytics 



Apologies for not consulting about this survey first - unfortunately 
time is short.  She'll have to look at the responses obtained in the 
next five days or so, but I think it will probably be good to leave 
the survey open for longer to get more results (if there is a good 
number hopefully the information will be useful to the community).


Thanks,
Alister


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Re: [Qgis-user] gdal-ecw distribution / licensing

[Alister Hood]

(Oops, try again. Sorry Nathan for the second copy):

Sorry everyone,
Looks like I've messed up this thread a bit by hitting reply instead
of reply all, and
also sending one email accidentally.  I'll try to reassemble it, since
I wanted to get
the logic on the record:

On 21/08/2013, Nathan Woodrow madman...@gmail.com wrote:
On 21/08/2013, Alister Hood alister.h...@gmail.com wrote:
 On 21/08/2013, Nathan Woodrow madman...@gmail.com wrote:
 This is not a QGIS GPL thing. It's related to GDAL.

 That'd be find if you were just shipping it with gdal.  e.g. you could
 ship it in an installer for an LGPL or proprietary licensed program
 (e.g. an ECW header editor), and if someone wanted to they could
 install that over the top of the gdal in a QGIS install.

 But if you're shipping it and gdal with QGIS, not as a separate
 program, then the QGIS license is also relevant.  Isn't this situation
 the exact reason why the LGPL is mentioned in exceptions like this?:
 In addition, as a special exception, the copyright holders of ABC
 give you permission to combine ABC program with free software programs
 or libraries that are released under the GNU LGPL and with...
 (http://www.gnu.org/licenses/old-licenses/gpl-2.0-faq.html#GPLIncompatibleLibs)

 Or is it somehow different in this case because the interface with the
 ECW libs will be separated out into a separate gdal-ecw plugin, and
 QGIS and the main gdal lib can function fine without that?.

 I'm pretty sure this is the case.  Some that want to follow GPL to the letter
 might not see it as still workable but most see it as fine.  It's the same if 
 I
 complied GDAL with DWG support because it needs a propitiatory driver.
 QGIS will work with it fine, but in that case we can't ship it because we 
 can't
 ship the closed DWG drivers.

 gdal-ecw is built
 against the ecw libs and we just have to ship them with QGIS so GDAL can
 find them.  The GDAL licence allows this and Intergraph allows you to
 ship
 the ECW read-only libs as long as you show their EULA for them in your
 application.  For us this will be shown on install and in the about
 dialog.

 - Nathan


 On Wed, Aug 21, 2013 at 11:54 AM, Alister alister.h...@gmail.com wrote:

 Hi guys,
 I've never understood why we had a concern about licensing on the
 Intergraph side in the first place.  But has anyone recorded the logic
 around how this doesn't violate *the GPL*?  Wouldn't QGIS need a license
 exception to allow this?  If not, it would be nice to put this
 interpretation of the GPL on the record...

 Regards,
 Alister

The punchline is in the middle with Nathan's example of ECW vs DWG, except it's
a little unclear - I think he's saying that DWG support is built into
the main gdal lib,
not as a plugin, so he really means it's _different_ with DWG, not _the same_.

FWIW, because of the exception clauses I referred to and
interpretations like at
http://gstreamer.freedesktop.org/data/doc/gstreamer/head/faq/html/chapter-legal.html
I still haven't seen enough to convince me that this reasoning is correct.
If anyone has a good reference supporting it that'd be great, but at least now
the reasoning is clear.
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Re: [Qgis-user] [Qgis-developer] Final Logo Pick

[Alister Hood]

Just in case anyone was wondering, 5 means that you really like it, not that 
you really don't like it (the system here strips out some content on those 
pages, so I guess maybe everyone else can see some sort of explanation of that, 
but I can't).
And if your browser gives you a choice of 0-5 rather than 1-5, it looks like 0 
means you don't want to rate it, whereas 1 means that you really don't like it.

 Date: Tue, 14 May 2013 01:06:27 -0700
 From: Nathan Woodrow madman...@gmail.com
 To: Nyall Dawson nyall.daw...@gmail.com
 Cc: qgis-user qgis-user@lists.osgeo.org,
 qgis-develo...@lists.osgeo.org qgis-develo...@lists.osgeo.org,
 t...@wildintellect.com t...@wildintellect.com
 Subject: Re: [Qgis-user] [Qgis-developer] Final Logo Pick
 Message-ID: 5431422257135814391@unknownmsgid
 Content-Type: text/plain; charset=ISO-8859-1
 
 Vote on the second if your are only going to vote once. The second one
 has the picks from the first. The green background ones in the first
 have low votes so they are removed.
 
 Sent from some fancy phone looking thingo
  From: Nyall Dawson
  Sent: 14/05/2013 5:56 PM
  To: Nathan Woodrow
  Cc: t...@wildintellect.com; qgis-user; qgis-develo...@lists.osgeo.org
  Subject: Re: [Qgis-developer] Final Logo Pick
  
   There are now two polls:
  
   http://99designs.com.au/logo-design/contests/qgis-needs-logo-210397/poll/aqu952
  
   http://99designs.com.au/logo-design/contests/qgis-needs-logo-210397/poll/ls2bf1
  
   I have to run the second poll in order even out the playing field as I
   missed some of Larry's in the pick and the ones I did where not a fair
   comparison.  As I can't not close a poll (I have requested it from the
   company but not word yet), or edit a poll (which is really dumb and makes
   this harder for me) I have to run two.
  
  
  Should we be voting on both polls then? How does that work with the
  logos which are on both polls?
  
  Nyall
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Re: [Qgis-user] [Qgis-developer] [Qgis-psc] Logo

[Alister Hood]

Hi,

 Date: Sat, 20 Apr 2013 14:47:39 +1000
 From: Nathan Woodrow madman...@gmail.com
 To: Marco Bernasocchi ma...@bernawebdesign.ch
 Cc: qgis-developer qgis-develo...@lists.osgeo.org,qgis-user
 qgis-user@lists.osgeo.org
 Subject: Re: [Qgis-developer] [Qgis-user]  [Qgis-psc] Logo
 Message-ID:
 CAAi8Yg88oqQCHZnu=5P=ptm=js1pmrvve_x7bg1emhij1hq...@mail.gmail.com
 Content-Type: text/plain; charset=iso-8859-1
 
 Hi all,
 
 There is now another poll with some more designs:
 
 http://99designs.com.au/logo-design/vote-9qwk3a
 
 All polls can be found at:
 
 http://99designs.com.au/logo-design/contests/qgis-needs-logo-210397/polls

In case you've added any more polls, note that this page is not visible without 
a logon.

 - Nathan

FWIW, I think that #336 is really good, but it was probably added to late to be 
really noticed.

A couple of people said they like the other variations of it, by I think the 
one which has the triangle on the Q in a different colour is no good because it 
isn't clear enough that it is a Q.  Even in #336 I guess it might not be clear 
enough, but the triangle does seem cool compared to a regular stroke on the Q...

Of course, I'm still not convinced it is better than the proposal here:
http://hub.qgis.org/issues/6688
;)
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Re: [Qgis-user] How to hide the node marks in the Composer?

[Alister Hood]

See
http://hub.qgis.org/issues/2230

 Date: Sat, 2 Feb 2013 13:30:23 +1000
 From: Nathan Woodrow madman...@gmail.com
 To: kahukowhai kahukow...@gmail.com
 Cc: qgis-user qgis-user@lists.osgeo.org
 Subject: Re: [Qgis-user] How to hide the node marks in the Composer?
 Message-ID:
 CAAi8Yg8o1-tH7JX3J9b6dkpbmK1P=dokynqmc_reymbds_h...@mail.gmail.com
 Content-Type: text/plain; charset=iso-8859-1
 
 That looks like a bug to me.  I would file a ticket for it.  I can't think
 of any use for showing the edit markers in the composer map.
 
 - Nathan
 
 
 On Sat, Feb 2, 2013 at 12:53 PM, kahukowhai kahukow...@gmail.com wrote:
 
  I want to use the Composer while I have layers in Edit mode, so that I
  don't
  have to take them all out of Edit mode and put them back in again when I
  have finished composing. To do this, there needs to be some way of hiding
  the node marks that get drawn over paths when they are placed into Edit
  mode.
 
  Can this be done or is it something that needs to be submitted as a feature
  request?
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Re: [Qgis-user] Use excel spreadsheets for join to vector data

[Alister Hood]

 Date: Thu, 17 Jan 2013 00:50:18 -0800 (PST)
 From: Pietro Rossin pieri...@gmail.com
 To: qgis-user@lists.osgeo.org
 Subject: Re: [Qgis-user] Use excel spreadsheets for join to vector
 data
 Message-ID: 1358412618272-5028049.p...@n6.nabble.com
 Content-Type: text/plain; charset=us-ascii
 
 @Micha
 Thankyou for your suggestion
 Ok I can load xls files to sqlite and then make any sql join on that, but
 it's not user friendly and I have to make two steps, one is the creation of
 xls and the other the import into a sqlite db..
 If you don't want to mess with closed format it would be nice to deal with
 .ods format.
 You may say I'm lazy, ok, that's right, I am indeed ;-)
 But I think that for any beginner this solution will be super appreciated.

I think the solution is already coming: with GDAL 1.10 there should be support 
for .ods...
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Re: [Qgis-user] Let's discuss on a Mask feature

[Alister Hood]

Hi,

 Date: Fri, 7 Dec 2012 13:10:40 +0100
 From: Vincent Picavet vincent...@oslandia.com
 To: HAUBOURG regis.haubo...@eau-adour-garonne.fr
 Cc: 'qgis-user@lists.osgeo.org' qgis-user@lists.osgeo.org
 Subject: Re: [Qgis-user] Let's discuss on a Mask feature
 Message-ID: 201212071310.41007.vincent...@oslandia.com
 Content-Type: Text/Plain;  charset=iso-8859-1
 
 
 Before speaking about performance and technical aspect, we should agree on
 where in QGIS this kind of display-oriented ?layer? should go : composer, some
 kind of modifier layer, overlay layer, or classic data layer, or another 
 better
 solution ?
 We should generalize the problem, find a global concept, and verify that
 masking is covered by it.
 Or is masking the only forseen feature of this kind ?
 
 What do other think of it ?
 
 Vincent

There may be some parallel with the discussion earlier in the year about 
graticules as map/composer decorations versus layers:
http://lists.osgeo.org/pipermail/qgis-developer/2012-May/020040.html
http://lists.osgeo.org/pipermail/qgis-developer/2012-May/020047.html
http://lists.osgeo.org/pipermail/qgis-developer/2012-July/020854.html

For ease of use on a basic level it seems to me that instead of being a 
separate layer it should be some sort of symbology option tied to the original 
map layer, similar to how it works in Mapinfo.

If you need a different feature in the layer to act as the mask for each page 
in an Atlas, I don't know the best way of controlling that, but I think the 
same problem would need to be solved for other things like map titles.

Alister
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Re: [Qgis-user] labels on maps

[Alister Hood]

Yes,
The data defined labelling we're talking about applies to these labels.
Have a look at what Micha wrote.  Don't bother with the Create labeled layer 
plugin I mentioned - I now realise it only creates an empty point layer.  Be 
aware that the automatic labels move around at different zoom levels, so choose 
an appropriate scale when you do any manual placement.
And I wasn't clear about the easy custom labeling plugin either - it does use 
the new labelling engine, but on a new layer made with a point at the centroid 
of each feature, so for polygon and polyline layers you lose the real benefits 
of the automatic label placement.

 -Original Message-
 From: M.E.Dodd [mailto:m.e.d...@open.ac.uk]
 Sent: Tuesday, 2 October 2012 10:22 p.m.
 To: Alister Hood
 Subject: RE: [Qgis-user] labels on maps
 
 Thanks, I tried the layerlabelling in qgis 1.8 and managed to get labels
 that more or less don't overlap.  It did not mention 'collision avoidance'
 and has not put in lines but has put the labels in reasonable positions
 for most of the points either over, to one side, the other side or
 otherwise around the point without overwriting other close labels.  Very
 clever and much better than the original version of the map I had, however
 I am still not sure what to do about the small handful of labels that do
 overlap, is there a way of dragging or otherwise moving these?
 
 -Original Message-
 From: Alister Hood [mailto:alister.h...@synergine.com]
 Sent: 01 October 2012 23:39
 To: qgis-user@lists.osgeo.org
 Subject: Re: [Qgis-user] labels on maps
 
 Yes, the reason it's quite so easy in Mapinfo is because the label
 location overrides are saved in the project file, not in the layer's
 attribute fields.  (It isn't so easy to figure out how to unfreeze the
 label though - the button with the tooltip that just says label
 unfreezes the label location, but the label will remain visible if you
 switch off automatic labels... and now I seem to have killed Mapinfo...)
 
 It's not like manually arranging labels is _hard_ in QGIS, but if you want
 it to be slightly more automated you can try the create labelled layer
 plugin.  I guess it might not be too hard to add an option to the plugin
 so it adds the attribute fields to the original layer, rather than to a
 copy.
 
 And it turns out I was wrong, you can draw leaders in QGIS, using the
 easy custom labelling plugin.  This is exactly what you want.
 
 But personally I think manually arranging labels is a mug's game, and you
 can't draw leaders for automatically placed labels (in either QGIS or
 MapInfo).
 
 BTW, have you actually tried the automatic label placement?  Micha
 referred to it (new labelling), but he didn't explain where to find it.
 You may have only tried the old labelling, which is a tab in the layer
 properties dialog and doesn't do any collision avoidance.  The separate
 new labelling dialog needs to be opened from a button on the labelling
 toolbar, or I guess in the menu, Layerlabelling (I'm not certain if that
 is available for you, as I'm running QGIS master).
 
 
  -Original Message-
  From: M.E.Dodd [mailto:m.e.d...@open.ac.uk]
  Sent: Tuesday, 2 October 2012 10:24 a.m.
  To: Alister Hood; qgis-user@lists.osgeo.org
  Subject: RE: [Qgis-user] labels on maps
 
  Doing what I want is easy in mapinfo as you just drag and drop the
  labels individually and the line is automatically generated but I want
  to do it in qgis.
  
  From: Alister Hood [alister.h...@synergine.com]
  Sent: Monday, October 01, 2012 10:18 PM
  To: qgis-user@lists.osgeo.org
  Subject: Re: [Qgis-user] labels on maps
 
   Date: Mon, 01 Oct 2012 17:48:54 +0200
   From: Micha Silver mi...@arava.co.il
   To: M.E.Dodd m.e.d...@open.ac.uk
   Cc: qgis-user@lists.osgeo.org qgis-user@lists.osgeo.org
   Subject: Re: [Qgis-user] labels on maps
   Message-ID: 5069bb66.9000...@arava.co.il
   Content-Type: text/plain; charset=windows-1255; format=flowed
  
   On 10/01/2012 04:40 PM, M.E.Dodd wrote:
converted from rtf
I have a map with lots of point data which I want to label.  When
switching on labels lots of them end up on top of each other as
some of the points are close to each other.  Is there a way of
automatically spacing the labels out to avoid overlap with a line
going to the point from the label. Alternatively a way of doing
this by hand just by dragging each of the labels out of the way
but automatically generating a line showing where the associated
 point is.
  
   You'll want to use the new labeling engine for this. You add, in
   advance, two columns to your point data attribute table for x
   displacement and y displacement, and specify these columns in the
   labeling Data defined settings tab. Then you can move each label
   individually (while the layer has editing enabled), and it's
   location will be saved to the table.
 
  Ah, but there's no way of doing what he wants

Re: [Qgis-user] labels on maps

[Alister Hood]

Yes, the reason it's quite so easy in Mapinfo is because the label location 
overrides are saved in the project file, not in the layer's attribute fields.  
(It isn't so easy to figure out how to unfreeze the label though - the button 
with the tooltip that just says label unfreezes the label location, but the 
label will remain visible if you switch off automatic labels... and now I seem 
to have killed Mapinfo...)

It's not like manually arranging labels is _hard_ in QGIS, but if you want it 
to be slightly more automated you can try the create labelled layer plugin.  
I guess it might not be too hard to add an option to the plugin so it adds the 
attribute fields to the original layer, rather than to a copy.

And it turns out I was wrong, you can draw leaders in QGIS, using the easy 
custom labelling plugin.  This is exactly what you want.

But personally I think manually arranging labels is a mug's game, and you can't 
draw leaders for automatically placed labels (in either QGIS or MapInfo).

BTW, have you actually tried the automatic label placement?  Micha referred to 
it (new labelling), but he didn't explain where to find it.  You may have 
only tried the old labelling, which is a tab in the layer properties dialog 
and doesn't do any collision avoidance.  The separate new labelling dialog 
needs to be opened from a button on the labelling toolbar, or I guess in the 
menu, Layerlabelling (I'm not certain if that is available for you, as I'm 
running QGIS master).


 -Original Message-
 From: M.E.Dodd [mailto:m.e.d...@open.ac.uk]
 Sent: Tuesday, 2 October 2012 10:24 a.m.
 To: Alister Hood; qgis-user@lists.osgeo.org
 Subject: RE: [Qgis-user] labels on maps
 
 Doing what I want is easy in mapinfo as you just drag and drop the labels
 individually and the line is automatically generated but I want to do it
 in qgis.
 
 From: Alister Hood [alister.h...@synergine.com]
 Sent: Monday, October 01, 2012 10:18 PM
 To: qgis-user@lists.osgeo.org
 Subject: Re: [Qgis-user] labels on maps
 
  Date: Mon, 01 Oct 2012 17:48:54 +0200
  From: Micha Silver mi...@arava.co.il
  To: M.E.Dodd m.e.d...@open.ac.uk
  Cc: qgis-user@lists.osgeo.org qgis-user@lists.osgeo.org
  Subject: Re: [Qgis-user] labels on maps
  Message-ID: 5069bb66.9000...@arava.co.il
  Content-Type: text/plain; charset=windows-1255; format=flowed
 
  On 10/01/2012 04:40 PM, M.E.Dodd wrote:
   converted from rtf
   I have a map with lots of point data which I want to label.  When
   switching on labels lots of them end up on top of each other as some
   of the points are close to each other.  Is there a way of
   automatically spacing the labels out to avoid overlap with a line
   going to the point from the label. Alternatively a way of doing this
   by hand just by dragging each of the labels out of the way but
   automatically generating a line showing where the associated point is.
 
  You'll want to use the new labeling engine for this. You add, in
  advance, two columns to your point data attribute table for x
  displacement and y displacement, and specify these columns in the
  labeling Data defined settings tab. Then you can move each label
  individually (while the layer has editing enabled), and it's location
  will be saved to the table.
 
 Ah, but there's no way of doing what he wants and drawing a line from the
 label to the feature (called a leader in CAD), is there?
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 --
 The Open University is incorporated by Royal Charter (RC 000391), an
 exempt charity in England  Wales and a charity registered in Scotland (SC
 038302).

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Re: [Qgis-user] Starting QGIS

[Alister Hood]

Hi,

 Date: Mon, 24 Sep 2012 15:49:18 +
 From: Eliana Acosta Valero eliana.aco...@igac.gov.co
 To: qgis-user@lists.osgeo.org qgis-user@lists.osgeo.org
 Subject: [Qgis-user] Starting QGIS
 Message-ID:
   3BCA04C33B396B428145F686EA3E353C1ADC67B4@SRVMAIL2.DCIGAC.LOCAL
 Content-Type: text/plain; charset=iso-8859-1
 
 Hi! At first I'm sorry beocouse of my bad english, I'm from Colombia and I
 don't speak very well... But I'm starting to use QGIS, and I'm trying to
 do some editions but I can't find some symple tools like:
 
...
 - Select a object directly from the map and with out use the attribute
 table

Click in the layers list on the layer that the object is in.  Then use the 
select tools (In the menu under ViewSelect, or on the attributes toolbar).
You might find it helpful to read the QGIS manual, or follow some tutorials to 
learn the software.

Regards,
Alister
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Re: [Qgis-user] QT-Designer

[Alister Hood]

 Date: Mon, 24 Sep 2012 16:11:29 +0200
 From: Andre Joost andre+jo...@nurfuerspam.de
 To: qgis-user@lists.osgeo.org
 Subject: Re: [Qgis-user] QT-Designer
 Message-ID: k3ppn0$h11$1...@ger.gmane.org
 Content-Type: text/plain; charset=ISO-8859-1; format=flowed
 
 Am 24.09.2012 16:05, schrieb Bernd Vogelgesang:
 
 
  If anyone knows an easier way to get hands on the QT-Designer than
  installing this huge creator thing, it would be nice to be told about
 it.
 
 
 The Osgeo4w Installer has all you want...
 qt4-dev is the package.

The designer is only 704kb.  Perhaps it should be included in the standalone 
QGIS installer...
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Re: [Qgis-user] Normal mdb support possible for normal people?

[Alister Hood]

Hi,

 Date: Mon, 24 Sep 2012 09:14:29 +0200
 From: Even Rouault even.roua...@mines-paris.org
 To: Etienne Tourigny etourigny@gmail.com
 Cc: qgis-user@lists.osgeo.org
 Subject: Re: [Qgis-user] Normal mdb support possible for normal
   people?
 Message-ID: 1348470869.5060085548...@imp.free.fr
 Content-Type: text/plain; charset=ISO-8859-1
 
 Selon Etienne Tourigny etourigny@gmail.com:
 
  On Sun, Sep 23, 2012 at 5:15 PM, Even Rouault
  even.roua...@mines-paris.org wrote:
   Le dimanche 23 septembre 2012 21:58:30, Etienne Tourigny a ?crit :
   Hi Even,
  
   can you comment on using the java jackcess library? It's probably the
   only cross-platform solution. Does it support normal mdb files, and
 if
   not, can it benefit from your recent additions?
  
   http://www.gdal.org/ogr/drv_mdb.html
   http://jackcess.sourceforge.net/
  
   The MDB driver (with Jackcess library) indeed already supports normal
 MDB
   files. But it is a bit of a pain to use (needs linking GDAL with a JVM
 and
  the
   Jackess .jar), so the latest improvement to the ODBC driver should
 make it
   easier.
 
  But your improvements are only supported in windows, right?
 
 Yes. But there would be no problems to make it work on Linux too, like it
 is
 done in the PGeo driver, but personnaly I don't see the interest in doing
 so,
 since in my experience, MDBTools, the Unix MDB ODBC driver, under Linux
 (particularly 64bit) is too broken to be usefull

Does this apply for the new 0.7 version of mdbtools?  It seems to have a low 
profile because it is on github instead of sourceforge...
http://sourceforge.net/mailarchive/message.php?msg_id=29472144

Alister
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Re: [Qgis-user] Howto: load ArcGIS mapserver raster layers

[Alister Hood]

Hi everyone,
Just a quick follow up, as I've learned it is actually even easier than I 
described:

1. You can automatically generate a service description xml like this:

gdal_translate 
http://server.arcgisonline.com/ArcGIS/rest/services/World_Imagery/MapServer?f=jsonpretty=true;
 ESRI_world_imagery.xml -of WMS

2. You don't actually need a service description xml.  You can run this in the 
QGIS Python console:

qgis.utils.iface.addRasterLayer(http://server.arcgisonline.com/ArcGIS/rest/services/World_Imagery/MapServer?f=jsonpretty=true,raster;)

I've now created a wiki page about this.


 -Original Message-
 From: Alister Hood
 Sent: Friday, 24 August 2012 12:44 p.m.
 To: 'qgis-user@lists.osgeo.org'
 Subject: Howto: load ArcGIS mapserver raster layers
 
 Hi everyone,
 I don't think anyone around here has ever explained how to add raster
 ArcGIS mapserver layers from servers which provide a REST interface.  As
 far as I know, there is no way to just load them with a url directly from
 the QGIS gui, but they can be handled by the GDAL WMS driver, and thus can
 be loaded in QGIS.
 
 Firstly (and the most difficult part) you need to find the URL for the
 REST service for your layer.  E.g. you might want to use a layer that is
 available in the ESRI Maps for Personal Use web map at:
 http://www.arcgis.com/home/webmap/viewer.html?useExisting=1
 Hopefully with a little googling you will be able to find the address
 where you can browse the ArcGIS services directory of your favourite
 ArcGIS server.  In this case it is:
 http://server.arcgisonline.com/ArcGIS/rest/services/
 
 Find the layer that you are after, and now you have two options:
 
 1. You can create a GDAL service description XML file, and open it with
 QGIS.
 E.g. try this file:
 http://www.gdal.org/frmt_wms_arcgis_mapserver_tms.xml
 Or e.g. save the XML code pasted at
 http://trac.osgeo.org/mapserver/ticket/3804 and try it.
 
 2. You can create a .vrt file (which requires less thinking), and open
 that with QGIS.
 E.g. find the raster layer you want in the ArcGIS services directory, and
 get the URL for its REST interface, which should be at the bottom of the
 page, under Supported Interfaces.  The gdal utilities can just use this
 URL (since GDAL 1.9), so you can simply create a .vrt like this:
 gdalbuildvrt test.vrt
 http://server.arcgisonline.com/ArcGIS/rest/services/World_Imagery/MapServ
 er?f=jsonpretty=true
 
 Of course, you will need to check the restrictions on what you are legally
 allowed to do with any particular layer.
 
 And if you are wondering: as far as I know there is currently no way to
 load _vector_ ArcGIS mapserver layers, or ArcGIS globeserver or
 featureserver layers (except for manually writing a query URL.  i.e. you
 can't use their REST services).
 
 Regards,
 Alister
 

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Re: [Qgis-user] Creating simple choropleths in Q1.8

[Alister Hood]

You might also find this helpful:
http://underdark.wordpress.com/2011/03/07/how-to-specify-data-types-of-csv-columns-for-use-in-qgis/

Regards,
Alister


 Date: Sun, 2 Sep 2012 09:43:59 +0100
 From: Roy Marsh roymars...@gmail.com
 To: Langen Mallya cut...@gmail.com
 Cc: qgis-user@lists.osgeo.org
 Subject: Re: [Qgis-user] Creating simple choropleths in Q1.8
 Message-ID:
   CABkMR69vo6iJvHEdCRhCeqyxSMzpxvtUz5HpDxj=qoSiwd-
 w...@mail.gmail.com
 Content-Type: text/plain; charset=iso-8859-1
 
 Yes, it's a data type issue.
 Qgis imports as text so the data was not visible I used Field
 Calculator to convert text to real and suddenly it all worked I hope a
 future manual will mention this, as it affects everything Roy
 2012/9/1 Langen Mallya cut...@gmail.com
 
  Look at the data types its real a numeric in definition.
   On Sep 1, 2012 12:19 AM, Roy Marsh roymars...@gmail.com wrote:
  
   IN QGIS 1.8 I want to create a simple choropleth to show 5 bands
 for
   a
  range of numeric values
   I open Properties /Style for the vector layer and choose Legend
 Type
  'Continuous Colour'
   This should allow me to group values in a specified field into
  meaningful bands
   Unfortunately, the 'classification field' box is greyed out in the
  dialogue box, so no existing fields are selectable
   Strangely, if a new field is created, this becomes one of the
   selectable
  fields in the 'Classification field' box
  
   Surely the system should not behave like this?
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[Qgis-user] How to Compile GDAL from gdal trunk and qgis from source ?

[Alister Hood]

Go to the GDAL website and following the links:
Building from sourceBuilding on Windows.

Go to http://www.qgis.org/api/INSTALL.html


 Date: Thu, 30 Aug 2012 01:12:12 -0700 (PDT)
 From: laurent celati lcel...@latitude-geosystems.com
 To: qgis-user@lists.osgeo.org
 Subject: [Qgis-user] How to Compile GDAL from gdal trunk and qgis from
   source ?
 Message-ID: 1346314332626-4998803.p...@n6.nabble.com
 Content-Type: text/plain; charset=UTF-8
 
 Hello,
 
 I have posted a message there a few weeks. I asked you a way to compile
 the last Gdal version from trunk and Qgis from source targeting your
 gdal source as library in order to use the last Gdal postis raster driver.
 You answered that the last binairies qgis 1.8 version is available with
 the last version of gdal (1.9.1) and that it's useless to compile.
 
 I understand your reply. BUT I have talked last days with developpers of
 Gdal Postgis raster driver. They just add several important updates to
 the driver. And they confirm to me that the only way to use the last
 driver is to compile GDAL from gdal trunk and qgis from source using that
 compilation as GDAL version.
 Please to read below few sentences written by those developpers :
 --
 That's the only way to get the development version working. You have to
 compile GDAL from svn and qgis from source using that compilation as GDAL
 version.
 I'm not following osgeo4w binaries, but I don't think they would provide a
 QGIS build with both gdal and qgis from svn. It's not entirely impossible
 because I know they release a few nightly snapshots.
 So, you have to use the last GDAL version from trunk in order to have the
 last Gdal Postgis raster driver updates.You just need to compile QGIS
 from source targeting your GDAL source as library.I think that if you make
 any header changes you may need to recompile it all since QGIS depends on
 GDAL.So you have to work with last gdal version from trunk.
 --
 
 I need this last version of Gdal Postgis raster driver on my windows 7-64
 bits station but those developpers working on Linux.
 Could you explain to me the way to compile GDAL from gdal trunk and qgis
 from source using that compilation as GDAL version (sources links to
 download, compilation proc?dure,etc.). I am a thematician geograph and i
 am a novice in software compilation;-(
 
 In advance, thank you for your reply.
 
 Kind regards.
 
 Laurent Celati
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Re: [Qgis-user] Accessing an Oracle database, natively or through ArcSDE

[Alister Hood]

Hi, 

 Date: Wed, 15 Aug 2012 10:09:40 +0100
 From: Jonathan Moules jonathanmou...@warwickshire.gov.uk
 To: qgis-user@lists.osgeo.org
 Subject: [Qgis-user] Accessing an Oracle database, natively or through
   ArcSDE
 Message-ID:
   CAA-xNcW_LyK35Ug=usqKLK=qBP=ujwkt9fsoj2_rstg2xwk...@mail.gmail.com
 Content-Type: text/plain; charset=iso-8859-1
 
 Hi List,
 I'm investigating QGIS as a possible suplement to our corporate systems
 (ArcGIS/MapInfo). We store all of our vector data in an Oracle Locator
 database and can either connect to it directly or through ArcSDE.
 Unfortunately it doesn't seem that QGIS is able to natively connect to
 either of these.
 
 I've done some brief searching, but most of the results point to
 qgis.orgwhich isn't responding for me currently. What I can find suggests
 that most things want to go either either OGR or GDAL as an intermediary
 layer, but I'm concerned these will greatly slow down data loading (some
 of our layers are very big, including Ordnance Survey MasterMap).

Did you make any progress with this after the server came back up?
I guess you are using Windows (not that I would recommend doing so :) ).
The gdal-sde plugins I posted on the old forum don't work with the latest gdal. 
 But I extracted some new ones from 
http://dl.maptools.org/dl/ms4w/ms4w_3.0.6.zip and they seem to work fine (I 
finally found a publicly accessible server that I could successfully test 
with!).

 
 So my question is simple - what would be the optimal way for QGIS to read
 this data (we're not interested in writing)?

Can your server not provide WFS?  If you could enable it easily on the server I 
would have thought that would be the easiest and most flexible option.
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Re: [Qgis-user] loading Web Map Tile Service in QGIS

[Alister Hood]

Specifically, save the xml file from Option 1) at:
http://earthdata.nasa.gov/wiki/main/index.php/GIBS_Supported_Clients#Script-level_access_to_imagery
Drag-and-drop it into QGIS and it will display fine.

Of course, see the note at the bottom of the page:
Requirements
GDAL version 1.9.1 or greater with cURL support enabled


 Date: Thu, 23 Aug 2012 15:33:42 -0300
 From: Etienne Tourigny etourigny@gmail.com
 To: maning sambale emmanuel.samb...@gmail.com
 Cc: qgis-user qgis-user@lists.osgeo.org
 Subject: Re: [Qgis-user] loading Web Map Tile Service in QGIS
 Message-ID:
   CA+TxYvOZzDX=zm975i_PcUB0zsEa-rCtu5s6rR-J=byw+nb...@mail.gmail.com
 Content-Type: text/plain; charset=ISO-8859-1
 
 have you tried gdal tms support? The following VRT file can load
 openstreemap tms
 
 http://www.3liz.com/blog/rldhont/index.php?post/2012/07/17/OpenStreetMap-
 Tiles-in-QGIS
 
 Etienne
 
 On Thu, Aug 23, 2012 at 7:47 AM, maning sambale
 emmanuel.samb...@gmail.com wrote:
  Hi,
 
  I'm trying to load MODIS Web Map Tile Service [0] in QGIS.  Using the
  TWMS version 1.1.1 spec, it can read the capabilities request via the
  Add WMS Layer dialog.  But I can't get any layer loaded, I get this
  error:
 
  Response: ?xml version='1.0' encoding=UTF-8 standalone=no ?
  !DOCTYPE ServiceExceptionReport SYSTEM
  http://wms.jpl.nasa.gov/exception_1_1_1.dtd 
  ServiceExceptionReport version=1.1.1
ServiceException
  Cannot read data files
/ServiceException
  /ServiceExceptionReport
 
 
 
  [0]
 http://earthdata.nasa.gov/wiki/main/index.php/Global_Imagery_Browse_Servic
 es
  [1]
 http://earthdata.nasa.gov/wiki/main/index.php/GIBS_Access_Methods#Service_
 Endpoints
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[Qgis-user] Howto: load ArcGIS mapserver raster layers

[Alister Hood]

Hi everyone,
I don't think anyone around here has ever explained how to add raster ArcGIS 
mapserver layers from servers which provide a REST interface.  As far as I 
know, there is no way to just load them with a url directly from the QGIS gui, 
but they can be handled by the GDAL WMS driver, and thus can be loaded in QGIS.
 
Firstly (and the most difficult part) you need to find the URL for the REST 
service for your layer.  E.g. you might want to use a layer that is available 
in the ESRI Maps for Personal Use web map at:
http://www.arcgis.com/home/webmap/viewer.html?useExisting=1
Hopefully with a little googling you will be able to find the address where you 
can browse the ArcGIS services directory of your favourite ArcGIS server.  In 
this case it is: http://server.arcgisonline.com/ArcGIS/rest/services/

Find the layer that you are after, and now you have two options:

1. You can create a GDAL service description XML file, and open it with QGIS.
E.g. try this file:
http://www.gdal.org/frmt_wms_arcgis_mapserver_tms.xml
Or e.g. save the XML code pasted at http://trac.osgeo.org/mapserver/ticket/3804 
and try it.

2. You can create a .vrt file (which requires less thinking), and open that 
with QGIS.
E.g. find the raster layer you want in the ArcGIS services directory, and get 
the URL for its REST interface, which should be at the bottom of the page, 
under Supported Interfaces.  The gdal utilities can just use this URL (since 
GDAL 1.9), so you can simply create a .vrt like this:
gdalbuildvrt test.vrt 
http://server.arcgisonline.com/ArcGIS/rest/services/World_Imagery/MapServer?f=jsonpretty=true;

Of course, you will need to check the restrictions on what you are legally 
allowed to do with any particular layer.  

And if you are wondering: as far as I know there is currently no way to load 
_vector_ ArcGIS mapserver layers, or ArcGIS globeserver or featureserver 
layers (except for manually writing a query URL.  i.e. you can't use their REST 
services).

Regards,
Alister


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[Qgis-user] duplicate layout

[Alister Hood]

 Date: Thu, 23 Aug 2012 13:19:56 -0700 (PDT)
 From: skampus stefano.cam...@regione.piemonte.it
 To: qgis-user@lists.osgeo.org
 Subject: [Qgis-user] duplicate layout
 Message-ID: 1345753180491-4997448.p...@n6.nabble.com
 Content-Type: text/plain; charset=us-ascii
 
 i have to edit different layout having more or less same contents. they
 differ themselves just only for two layers.
 all the icons, noxes etc are the same.
 is it a way to duplicate a layout and change just ony few things i need?

(In the composer)
File-Save as template
File-Load from template
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Re: [Qgis-user] Howto: load ArcGIS mapserver raster layers

[Alister Hood]

Yes,
If the server provides WMS you wouldn't need to know about it.
In this case, go to
http://boi.arc.niwa.co.nz/arcgis/rest/services/OS2020-BoI/OS2020_BoI_AerialPhoto_Color/MapServer
And you'll see at the bottom of the page that the supported interfaces are 
REST, SOAP and WMS.  (WMS might be restfull, but it is obviously different from 
what ESRI call a REST interface)
Look on the ESRI server I linked to and you'll see that only REST and SOAP are 
supported.
A local example that only supports REST and SOAP is the Auckland Council GIS.

Note that you could also connect to a WMS by using a GDAL service definition 
xml in the same way as I described, if you wanted to for some reason.  Perhaps 
the reason would be simplicity - you could keep the xml files in a folder with 
all your other layers, and load them in all the same ways, rather than using 
the Add WMS layer dialog.
I don't know how the QGIS WMS provider works - it might be interesting to 
compare the performance of one of those NIWA layers connecting to it in the 
three different ways:
- QGIS WMS provider
- WMS via a service definition xml
- ArcGIS REST via a service definition xml
 
 -Original Message-
 From: pcr...@pcreso.com [mailto:pcr...@pcreso.com]
 Sent: Friday, 24 August 2012 2:05 p.m.
 To: Alister Hood
 Cc: qgis-user@lists.osgeo.org
 Subject: Re: [Qgis-user] Howto: load ArcGIS mapserver raster layers
 
 Hi Alistair,
 
 Listed at http://www.niwa.co.nz/ei/feeds/report there are a few Arc Server
 raster layers, they are ESRI Mapserver restful layers, but deliver OGC
 WMS.
 
 Such layers are as available as any other WMS data source, eg:
 http://boi.arc.niwa.co.nz/arcgis/services/climate/MedianAnnualTotalRainfal
 l/MapServer/WMSServer
 
 I figure what you are describing is a way to access the ESRI native (as
 opposed to OGC compliant) services in QGIS using GDAL?
 
 
 Cheers,
 
Brent Wood
 
 --- On Fri, 8/24/12, Alister Hood alister.h...@synergine.com wrote:
 
 
 
   From: Alister Hood alister.h...@synergine.com
   Subject: [Qgis-user] Howto: load ArcGIS mapserver raster layers
   To: qgis-user@lists.osgeo.org qgis-user@lists.osgeo.org
   Date: Friday, August 24, 2012, 12:43 PM
 
 
   Hi everyone,
   I don't think anyone around here has ever explained how to add
 raster ArcGIS mapserver layers from servers which provide a REST
 interface.  As far as I know, there is no way to just load them with a url
 directly from the QGIS gui, but they can be handled by the GDAL WMS
 driver, and thus can be loaded in QGIS.
 
   Firstly (and the most difficult part) you need to find the URL for
 the REST service for your layer.  E.g. you might want to use a layer that
 is available in the ESRI Maps for Personal Use web map at:
   http://www.arcgis.com/home/webmap/viewer.html?useExisting=1
   Hopefully with a little googling you will be able to find the
 address where you can browse the ArcGIS services directory of your
 favourite ArcGIS server.  In this case it is:
 http://server.arcgisonline.com/ArcGIS/rest/services/
 
   Find the layer that you are after, and now you have two options:
 
   1. You can create a GDAL service description XML file, and open it
 with QGIS.
   E.g. try this file:
   http://www.gdal.org/frmt_wms_arcgis_mapserver_tms.xml
   Or e.g. save the XML code pasted at
 http://trac.osgeo.org/mapserver/ticket/3804 and try it.
 
   2. You can create a .vrt file (which requires less thinking), and
 open that with QGIS.
   E.g. find the raster layer you want in the ArcGIS services
 directory, and get the URL for its REST interface, which should be at the
 bottom of the page, under Supported Interfaces.  The gdal utilities can
 just use this URL (since GDAL 1.9), so you can simply create a .vrt like
 this:
   gdalbuildvrt test.vrt
 http://server.arcgisonline.com/ArcGIS/rest/services/World_Imagery/MapServ
 er?f=jsonpretty=true
 
   Of course, you will need to check the restrictions on what you are
 legally allowed to do with any particular layer.
 
   And if you are wondering: as far as I know there is currently no way
 to load _vector_ ArcGIS mapserver layers, or ArcGIS globeserver or
 featureserver layers (except for manually writing a query URL.  i.e. you
 can't use their REST services).
 
   Regards,
   Alister
 
 
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Re: [Qgis-user] QGIS running on RHEL 5 Thin Client Network

[Alister Hood]

Hi,

QGIS will run fine on machines like that.  I have used it a bit on my machine 
at home, which has similar specs, although I'm not running a big desktop 
environment like Gnome or KDE.  Some aspects of the performance are 
substantially better than on a high spec Windows machine at my work, where the 
antivirus is a real problem ;)

Of course, higher specs are always better (RAM can be extremely cheap these 
days and can make a big difference), and if you're going to be using large and 
complicated datasets you'll want to pay attention to how you manage your data.

Regards,
Alister

 Date: Thu, 16 Aug 2012 16:57:15 -0500 (CDT)
 From: Proctor, Nathanael nproc...@tamu.edu
 To: Qgis-user@lists.osgeo.org
 Subject: [Qgis-user] QGIS running on RHEL 5 Thin Client Network
 Message-ID:
   449466618.3214000.1345154235833.javamail.r...@neo.tamu.edu
 Content-Type: text/plain; charset=utf-8
 
 Hello QGIS users group,
 I am looking for details about the capabilities of running QGIS on thin
 clients running on a Red Hat Enterprise Linux Server (64 bit currently
 version 5 soon to upgrade to 6).
 Our thin clients have:
 1.5GHz processor
  1GB disk space
 896MB ram
 
 My understanding is that the ArcGIS requirements are:
 2.2GHz processor
 2.4GB disk space
 2GB ram
 Which exceeds our thin client capacity.
 
 Does anyone know the min and recommended requirements for QGIS to run on a
 thin client?
 Final question does anyone have a side-by-side functionality comparison of
 ArcGIS 10 and QGIS 1.8?
 Our company currently is licensed for ESRI ArcGIS 10 but this is using
 Windows Desktops. If QGIS can run on our current RHEL 5 64 Bit thin client
 network we would like to add it to the system.
 
 Thanks
 
 Nathanael Proctor
 nproc...@tamu.edu
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Re: [Qgis-user] image boundary

[Alister Hood]

Hi,

 Date: Tue, 14 Aug 2012 19:15:11 -0700 (PDT)
 From: skampus stefano.cam...@regione.piemonte.it
 To: qgis-user@lists.osgeo.org
 Subject: Re: [Qgis-user] image boundary
 Message-ID: 1344996911614-4995276.p...@n6.nabble.com
 Content-Type: text/plain; charset=us-ascii
 
 thanks to giovanni manghi who told me to use tileindex module of gdal in
 the raster menu.
 great! all it works so i have my brand new shapefile having the path each
 photo as attribute of each polygon.
 
 now i'd like to add an action in order to add the image to TOC.
 what is the qgis internal function to use as an action to add raster image
 to toc?

See here, also for a couple of limitations you might want to look at resolving:
http://osgeo-org.1560.n6.nabble.com/Actions-HowTo-tp4534256p4553096.html

Regards,
Alister
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Re: [Qgis-user] image boundary

[Alister Hood]

 Date: Wed, 15 Aug 2012 17:44:24 +0200
 From: Ivan Mincik ivan.min...@gmail.com
 To: skampus stefano.cam...@regione.piemonte.it
 Cc: qgis-user@lists.osgeo.org
 Subject: Re: [Qgis-user] image boundary
 Message-ID: 1345045464.4203.7.camel@t61
 Content-Type: text/plain; charset=utf-8
 
 On Tue, 2012-08-14 at 19:15 -0700, skampus wrote:
  thanks to giovanni manghi who told me to use tileindex module of gdal
  in the raster menu.
  great! all it works so i have my brand new shapefile having the path
  each photo as attribute of each polygon.
 
  now i'd like to add an action in order to add the image to TOC.
  what is the qgis internal function to use as an action to add raster
  image to toc?
 
 Do You know that You can use 'gdalbuildvrt' command to create virtual
 raster layer containing all your raster files and load it as one layer.
 Than files matching your viewport will be automatically loaded by demand.

FWIW Gdalbuildvrt is also available in the QGIS menu under RasterMiscellaneous
But there are cases where using an action to load a raster from a tileindex is 
preferable...
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Re: [Qgis-user] XYtools needs Excel python modules

[Alister Hood]

Hi,

 Date: Sat, 11 Aug 2012 16:39:02 -0700 (PDT)
 From: Healthmaps rhosk...@u.washington.edu
 To: qgis-user@lists.osgeo.org
 Subject: [Qgis-user] XYtools needs Excel python modules
 Message-ID: 1344728342654-4994635.p...@n6.nabble.com
 Content-Type: text/plain; charset=us-ascii
 
 QGIS 1.8 XYtools gives and error message about needing XLW  XLRD Python
 libraries. I have found the site where they are but I do not understand any
 of the directions, etc. I am not a Python programmer resulting in my having
 no clue about one has to do. Can sopmeone point me to directions that will
 tell me exactly what one is supposed to do and where one does it to get the
 XYtools Excel pythins working. Same for Open Office. Seems the installation
 process for XYtools should do this. Is there something I missed in the
 installation? Thanks!

If you are Windows, the packages python-xlrd and python-xlwt should be 
available in the OSGeo4W installer - you shouldn't need to manually install 
them yourself.

Regards,
Alister
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Re: [Qgis-user] 3D polylines

[Alister Hood]

Hi Mikhail,
Using that setting makes every email an _attachment_ to the digest, which isn't 
really useful... unless you're using some mail reader which displays all the 
attachments in-line.

Note - I think the invisible messages might be solvable by an upgrade of the 
mailing list software: http://trac.osgeo.org/osgeo/ticket/838

 ___
 From: Mikhail Titov [m...@gmx.us]
 Sent: Thursday, 12 July 2012 7:06 a.m.
 To: Alister Hood
 Cc: qgis-user-qjldd68f18nyqmayxoh...@public.gmane.org; 
 j.allain-ocackkgq46vufx5v4usavuza+k1vl...@public.gmane.org
 Subject: Re: 3D polylines
 
 Alister Hood Alister.Hood-CysrACQw//tl57midrc...@public.gmane.org
 writes:
 
  Hi Jonathan, First: as you can see below, your email client is sending
  emails which omit the email content for people who are reading this
  list in digest mode.  Please check your email client's mail format
  setting - I think the problem is that it is configured to send in html
  format only.  Sending in both html and plain text should work fine.
  (Micha - if you're reading this, all of your emails are still like
  this as well - can you please check your email format settings?).
  Thanks.
 
 While I agree that plain text shall be used as a rule, I believe it is a
 matter of 3rd setting in [1]. One may opt-in to receive MIME digests.
 
 [1] http://lists.osgeo.org/mailman/options/qgis-user
 
 --
 Mikhail
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Re: [Qgis-user] contour plugin

[Alister Hood]

Hi again,

 Date: Thu, 12 Jul 2012 10:23:13 -0400
 From: David M. Lawrence d...@fuzzo.com
 To: qgis-user@lists.osgeo.org
 Subject: Re: [Qgis-user] contour plugin
 Message-ID: 4ffeddd1.6060...@fuzzo.com
 Content-Type: text/plain; charset=ISO-8859-1; format=flowed
 
 Dear all:
 
 I tried all of this -- contour does work on my machine with a dataset I
 downloaded from an online tutorial, so I think the problem may be with
 my data instead.  The tutorial's data were obtained from an evenly
 spaced grid.
 
 My data are not evenly spaced. They are soundings (depth measurements)
 from a quarry linked to geographic data obtained via a GPS receiver.
 The measurements are irregularly spaced.

For what it's worth, I've only ever tried the contour plugin with irregular 
points.
But it may be very slow for datasets that size.  Try what David suggested; it 
should be fast:

Raster/Analysis/Grid
Raster/Extraction/Contour

 The latest version of the data set has more than 900 points covering 75
 percent of the aerial extent of a quarry.  I've been running the contour
 procedure for 12 hours now.  The contour dialog box indicates it is not
 responding, but I know from other software that that may mean the
 contour procedure is actually thinking.
 
 Every time I check Task Manager (I'm running QGIS Wroclaw on Windows
 7-64) the number of processes seems to fluctuate around 50, with an
 observed range of 42 to 52.  The amount of memory consumed ranges from
 68,000 Kb to a little more than 100,000 Kb.

It's worth looking at the CPU column (you might need to use ViewSelect 
columns).  If it is actually working, QGIS should almost fully use 1 
processor/core i.e. it should show up as 50% on a dual core machine.  If it 
shows up not using any CPU then something has gone wrong.  (It wouldn't be the 
case here, but sometimes you can identify that a task has a bottleneck reading 
data across a network or something, because it is only using a small amount of 
CPU.)
 
  From this, I consider the hypothesis that contour is working more
 likely than the hypothesis that it has frozen.  Comments, anyone?

Yes, I think so.
 
Regards,
Alister
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Re: [Qgis-user] contour plugin

[Alister Hood]

Hi Dave,
There is no point in installing any libraries for a separately installed Python 
to use.
On Windows QGIS follows the common Windows practice of every program installing 
its own copy of all its dependencies.
So QGIS will use the Python that is installed by the QGIS installer if you use 
the standalone QGIS installer, or by the OSGeo4W installer if you use that.
QGIS should not use any Python that is installed separately (unless you've done 
some trickery to make it care, or something has changed that I am not aware of).
It is possible to install QGIS using both the QGIS installer and the OSGeo4W 
installer, and they will both have their own Python.

With OSGeo4W, the steps to install should be:
- run through the OSGeo4W installer and check that you have installed QGIS, 
matplotlib, python-numpy and python-shapely.
- install the plugin.
There used to be a problem with the matplotlib package that meant you also had 
to edit a file to make it work unless your install somehow had Tk.  But I 
believe that is fixed, and it produced a recognisable warning message, anyway.

If you use the standalone installer.  I thought it included all the 
dependencies of this plugin, but I could be wrong.

Anyway, since you seem to be able to start the plugin, your problem doesn't 
appear to be with getting it all installed.  Some ideas:
- Try  the plugin on an even smaller dataset to see if it works (If I remember 
correctly, I think it might be quite slow, but several hours for 400 points 
does seem like a very long time).
- When the plugin appears to be frozen, can you look in the windows process 
manager to see if it is actually doing any work?
- Remove the separate Python and all the associated junk to see if that is 
affecting QGIS.  (But I doubt that it is)
- Provide your data for someone else to check that it works fine on their 
system.
Also, I could be wrong, but I think I remember this plugin freezing for me, and 
then somehow working fine when I tried it again with exactly the same 
options... have you tried it a second time?

Regards,
Alister


 Date: Mon, 09 Jul 2012 09:18:08 -0400
 From: David M. Lawrence d...@fuzzo.com
 To: qgis-user@lists.osgeo.org
 Subject: Re: [Qgis-user] contour plugin
 Message-ID: 4ffada10.4030...@fuzzo.com
 Content-Type: text/plain; charset=ISO-8859-1; format=flowed
 
 On 7/9/2012 4:40 AM, Giovanni Manghi wrote:
  ImportError: No module named matplotlib
  the message is clear, you misses matplotlib, that is easily installable
  with osgeo4w or with your favourite package manager if you use Linux.
 
  cheers
 
  -- Giovanni --
 
 No, the message is not clear.  I am a scientist, journalist, and do a
 fair bit of computer programming in other languages, but could use some
 better documentation myself.
 
 Can someone provide step-by-step instructions -- with URLs needed to
 obtain modules -- so that those of us can get contour properly up and
 running?
 
 Bullet points:
 1) I use Win7-64.
 2) I have QGIS 1.8 installed.
 3) I seem to have OSGeo4W installed.
 4) I separately installed the appropriate version of Python 2.8 for my
 processor.
 5) I separately installed the appropriate version of NumPy for my
 processor/Python combination.
 6) I separately installed the appropriate version of SciPyfor my
 processor/Python combination(I thought I saw it was needed for
 matplotlib or one of matplotlib's prerequisites).
 7) I separately installed the appropriate version of matplotlibfor my
 processor/Python combination.
 
 After all that, contour still freezes when I run it (all I get is a Not
 Responding for several hours with no other error message).  Maybe it
 takes that long, but I only have about 400 points to contour at present.
 
 I fully appreciate that I may have not installed something properly, but
 after several hours of googling this and that to figure out how to get
 this or that installed and functioning I am no closer to a solution.
 So, please, don't be afraid to insult my intelligence -- you'll fail
 anyway -- but please be explicit and clear as to how I and others
 interested in the plugin can get it running.  Don't assume we know
 something you think is basic information.
 
 I'm not trying to hurt anyone's feelings here, but I am a communications
 professional -- in addition to being a geographer and natural scientist
 -- and I know something about how to get a message across.  Right now,
 I'd really, really like to get one.
 
 Thank you all for your time.
 
 Dave
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Re: [Qgis-user] Difference in Area/Perimeter calculations

[Alister Hood]

Hi Harish,
It's a little unclear - are you asking for an explanation of why there is a 
difference?

Regards,
Alister

 Date: Mon, 9 Jul 2012 13:03:05 +0530
 From: Harish harry.om2...@gmail.com
 To: Qgis-user@lists.osgeo.org
 Subject: [Qgis-user] Difference in Area/Perimeter calculations
 Message-ID:
 CAKCjEX8-H++RBnVFF5trsKMv=ldqoo43bbivapod6jox2nb...@mail.gmail.com
 Content-Type: text/plain; charset=iso-8859-1
 
 There is difference between area/perimeter calculations with ellipsoid and
 project CRS. Attached is a screenshot in which first area and perimeter
 columns are generated with tool 'Export/Add geometry columns' using
 'Ellipsoid' and second area and perimeter with using 'Project CRS' (used
 32643: UTM zone 43 North/WGS1984).
 
 Ellipsoid/Spheroid used in both cases is WGS84.
 
 QGIS1.8, Windows7.
 
 Regards
 
 
 --
 Harish Kumar Solanki, Assistant Professor
 National Institute of Rural Development (NIRD),
 Ministry of Rural Development, Government of India
 Jaipur, Rajasthan, India- Pin-302006
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[Qgis-user] Re some questions on Atlas plugin

[Alister Hood]

Hi,

 Date: Wed, 4 Jul 2012 09:40:41 +0200
 From: G. Allegri gioha...@gmail.com
 To: qgis-user qgis-user@lists.osgeo.org,  Andreas Neumann
 a.neum...@carto.net
 Subject: [Qgis-user] some questions on Atlas plugin
 Message-ID:
 CAB4g1=x9okvevfe8y-d_mjfhqaupnn-gtegigsckrga50av...@mail.gmail.com
 Content-Type: text/plain; charset=iso-8859-1
 
 I'm testing Atlas plugin to generate PDFs for various tiling layouts and
 sizes (from A0 to A2).
 I have two questions.
 
 1)
 the A0 PDF output cannot be read by Acrobat. Foxit Reader can open some of
 them, but suffer a lot. Is it something related to old issues with A0
 printing, like http://hub.qgis.org/issues/4821?
...
 
 [1] http://giovanniallegri.it/share/A0_tile.png
 [2] http://giovanniallegri.it/share/A0_0.pdf

I believe Foxit suffers a lot because of http://hub.qgis.org/issues/5150.
I'm not sure whether the pdf is truly corrupt or Acrobat just isn't as 
long-suffering as Foxit, but I have a feeling Acrobat wouldn't have a problem 
with the pdfs if #5150 was fixed.  The same error used to occur with PDFs 
produced from the composer, and it seemed like that problem went away about the 
same time as http://hub.qgis.org/issues/3250 was fixed...

Regards,
Alister
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Re: [Qgis-user] QGIS - Mapinfo question

[Alister Hood]

The other main problem is that no, QGIS can't understand a .tab file for a 
raster, although you could write a script to convert .tab to .jgw (and vice 
versa).
Going the other direction, I'm not sure if Mapinfo can currently understand a 
world file, but it certainly looks like it couldn't in the past (Maybe your 
friend could see if the Mapbasic code at 
http://free-zg.t-com.hr/gorantt/geo/tfw2tab.htm works though...)
I presume it isn't an option to use an image format with embedding 
georeferencing information (e.g. you could use a geotiff with jpeg compression)?

Alister


 Date: Thu, 28 Jun 2012 11:36:34 +0200
 From: Bo Victor Thomsen bo.victor.thom...@gmail.com
 To: qgis-user@lists.osgeo.org
 Subject: Re: [Qgis-user] QGIS - Mapinfo question
 Message-ID: 4fec25a2.4060...@gmail.com
 Content-Type: text/plain; charset=iso-8859-1; Format=flowed
 
 Robert -
 
 AFAIK you can't (directly) write/edit geometries in tab based layer in
 QGIS.
 
 However, you can create a new _shape_ layer, do the adding/editing in
 this layer and then right-click the layer in the layer manager and
 choose the Save As menu option. The save as dialogue gives you the
 possibility to save the (shape) layer as a tab-file.
 
 Another option is directly to send the shape file to your MapInfo user.
 MapInfo can read and use shape files.
 
 Regards
 Bo Victor Thomsen
 Aestas-GIS
 Denmark
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Re: [Qgis-user] how to export jpg-georeferences - TWF-Option

[Alister Hood]

Note that some software doesn't recognise *.wld files (there's one I use which 
even claims to but doesn't!).

 Date: Thu, 21 Jun 2012 10:55:48 +0200
 From: Jan Tappenbeck o...@tappenbeck.net
 To: qgis-user@lists.osgeo.org
 Subject: Re: [Qgis-user] how to export jpg-georeferences - TWF-Option
 Message-ID: 4fe2e194.9010...@tappenbeck.net
 Content-Type: text/plain; charset=ISO-8859-1; format=flowed
 
 Am 21.06.2012 10:06, schrieb Zirneklitis:
  Just change the extension to *.wld and it will suit for any image type.
 
  Karlis
 
  G. Allegri wrote:
  I add an obvious note: a jgw file is exactly the same as a tfw, the only
  difference is the extension.
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Re: [Qgis-user] help to list files by bourne-shell

[Alister Hood]

Hi,

 Date: Wed, 20 Jun 2012 17:02:51 +0200
 From: Zoltan Szecsei zolt...@geograph.co.za
 To: qgis-user@lists.osgeo.org
 Subject: Re: [Qgis-user] help to list files by bourne-shell
 Message-ID: 4fe1e61b.8050...@geograph.co.za
 Content-Type: text/plain; charset=ISO-8859-1; format=flowed
 
 On 2012/06/20 16:36, Jan Tappenbeck wrote:
  hi !
 
  i want to create a script for use in msys - but i am not a linux-user.
  i try to create this by a template:
 
  #!/bin/sh
  # Einfaches Beispiel
 
  for i in C:/Users/tappenbeck/Desktop/Project/*;
  do
  if [ -d $i ];
  then
  echo $i is directory;
  fi;
  done
 
  but there will no files list - can anyone help me ?

If you actually mean there are no _directories_ listed, I don't know what's 
going on.  It works for me, either running the script from the msys rxvt, or 
from the msys dos prompt (by running `sh script_path_and_name`).

If you really do mean there are no _files_ listed, try adding `else echo $i is 
file`.

BTW, they don't hurt, but you don't need any of those semicolons at the end of 
lines (;).  You need semicolons to separate separate commands that you want to 
write on the same line.

  reagards Jan :-)
 
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 The syntax should be:
 
 for i in `ls xxx/*`
 do
 etc

If you want to do that, why complicate things by using ls?
Why not just use `for i in */*; do` ?

 but if you have spaces in your file names, i will contain the words
 delimited by these spaces.
 
 fiddle with something like:
 
 ls -1 xxx/*  myfiles
 while read i
 do
wadda-wadda
 donemyfiles
 rm myfiles
 
 HTH,
 Zoltan

Alister
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Re: [Qgis-user] how to export jpg-georeferences

[Alister Hood]

Hi,
It looks like you have geotiff files which are incorrectly named with the 
extension .jpg

For geotiffs you can use listgeo as has been mentioned.

If hypothetically you had the same problem with some other format (say ECW for 
example), then you would either need to write a script to create the world 
files manually, or you could use gdal_translate to translate the images to 
another format, using the option to create a world file, and then throw the new 
images away and use a batch renamer to change the extension of the world files 
if necessary (e.g. to .eww).

Alister

 Date: Wed, 20 Jun 2012 15:54:37 +0200
 From: Jan Tappenbeck o...@tappenbeck.net
 To: qgis-user@lists.osgeo.org
 Subject: [Qgis-user] how to export jpg-georeferences
 Message-ID: 4fe1d61d.7070...@tappenbeck.net
 Content-Type: text/plain; charset=ISO-8859-15; format=flowed
 
 Hi !
 
 i have a folder of jpg files with geocoordinates:
 
 example:
 Driver: GTiff/GeoTIFF
 Files:
 //file2008v-01/data/GIS/Support/Projekte/IRIS_Projekte/Beckum/201202_raster_zur_aufwandssch?tzung/beckum_test_vorab/trans_300/dop10rgb_32427_5728_1_nw.jpg
 Size is 5000, 5000
 Coordinate System is `'
 Origin = (3427044.63586243100,5730851.30604828800)
 Pixel Size = (0.200079371417686,-0.200079371417686)
 Image Structure Metadata:
INTERLEAVE=PIXEL
 Corner Coordinates:
 Upper Left  ( 3427044.636, 5730851.306)
 Lower Left  ( 3427044.636, 5729850.909)
 Upper Right ( 3428045.033, 5730851.306)
 Lower Right ( 3428045.033, 5729850.909)
 Center  ( 3427544.834, 5730351.108)
 Band 1 Block=5000x1 Type=Byte, ColorInterp=Red
 Band 2 Block=5000x1 Type=Byte, ColorInterp=Green
 Band 3 Block=5000x1 Type=Byte, ColorInterp=Blue
 
 did anyone know a way to export word-files (jgw) ??
 
 regards Jan :-)
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Re: [Qgis-user] reprojecting data

[Alister Hood]

Hi Christy,

 Date: Mon, 11 Jun 2012 03:41:05 -0400
 From: Christy Ihlo c...@duke.edu
 To: qgis-user@lists.osgeo.org
 Subject: [Qgis-user] reprojecting data
 Message-ID: 4fd5a111.8090...@duke.edu
 Content-Type: text/plain; charset=iso-8859-1; Format=flowed
 
 Hello All,
 
 I apologize for the simplicity of my question, but I'm just starting out
 with QGIS. How do I reproject a vector layer's CRS? I am able to enable
 on-the-fly projection, but am not able to run spatial queries properly
 as the two layers are still in two different CRS. I've looked through
 the manual and over the wiki page, but perhaps I'm just missing something.
 
 Thank you for your help!

Try right-clicking on the layer and choosing Save As  There is an option 
to specify the output CRS.

Alister
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Re: [Qgis-user] Field Calculator: dynamic calculations

[Alister Hood]

Hi,

 Date: Mon, 11 Jun 2012 10:45:07 +0200
 From: Peter Sch?rch p.schue...@meierpartner.ch
 To: qgis-user@lists.osgeo.org
 Subject: [Qgis-user] Field Calculator: dynamic calculations
 Message-ID:
 3266F9F673EFF44BB345D5A707E32AC2919477@meiwed1.meierpartner.local
 Content-Type: text/plain;   charset=iso-8859-1
 
 Hi all,
 How would I implement a dynamic calculation with the field calculator? With 
 dynamic I mean that the  result would change as values change in the input 
 fields. With a Shape file, the result field obviously only contains the 
 numerical result of any calculation and when the input changes I have to 
 retype and re-execute the calculation in the field  calculator.
 In other GIS-Systems I have used this would be called a query.
 
 Thanks for any input on this.
 Peter

I guess some providers (PostGIS and Spatialite?) might have a feature that 
allows this, but otherwise I don't think it is currently possible, except for 
labelling.  As I mentioned in another thread today, there was a discussion 
about implementing virtual columns using the same engine as the expression 
based labelling.  See 
http://lists.osgeo.org/pipermail/qgis-developer/2011-July/015383.html
You might want to look at helping implement it.

Regards,
Alister
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Re: [Qgis-user] Areaunits and update fiels

[Alister Hood]

Hi,

 Date: Sun, 10 Jun 2012 11:44:40 +0200
 From: Lene Fischer l...@life.ku.dk
 To: Qgis-user@lists.osgeo.org
 Subject: [Qgis-user] Areaunits and update fiels
 Message-ID: 4fd488a8022e0003d...@gwmta2.kvl.dk
 Content-Type: text/plain; charset=utf-8
 
 Hi
 
 I?ve been searching for at setting to set areaunits. We mostly use
 hectare, so the standard alwas has to be divided with 1.
 
 Next question: In the fieldcalculator we can calculate an area, but the
 field isn?t updatet after editing. And suggestions?
 
 Kind Regards
 
 
 Lene Fischer
 Ass. Professor -  GIS  GPS

I don't think this is possible at the moment.

There has been some work on adding Python functionality that is similar to the 
way VBA is used in Microsoft office - e.g. allowing the use of scripts which 
will run automatically when a project is opened or saved.  See 
http://osgeo-org.1560.n6.nabble.com/Python-support-in-project-file-td4976475.html
I guess the ability to run a script automatically when a feature in a 
particular layer is edited would be a nice enhancement to go along with that, 
and could be used to achieve what you want.

But I don't think it is good practice to store derived data like this in an 
attribute field.  And if you are using it for labelling, it will be unnecessary 
with QGIS 1.8, which has on-the-fly expression based labelling.  Do you really 
need it in the attribute table?  There was a discussion about implementing 
virtual columns using the same engine as the expression based labelling.  See 
http://lists.osgeo.org/pipermail/qgis-developer/2011-July/015383.html
You might want to look at helping implement one of these features.

Regards,
Alister
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Re: [Qgis-user] qgis on Arch (was: qgis on linuxmint?)

[Alister Hood]

Hi,

 Date: Tue, 1 May 2012 11:36:28 +0100
 From: Ant?nio M. Rodrigues amcrgrodrig...@gmail.com
 Subject: Re: [Qgis-user] qgis on linuxmint?
 To: qgis-user@lists.osgeo.org
 Message-ID:
 CAC+EZtSo0BQWzQss5Md-ngXJ9rGpP4wCNQG1CXh+SsUG=dw...@mail.gmail.com
 Content-Type: text/plain; charset=iso-8859-1
 
 Hi all,
 
 A quick question concerning QGIS (and other software - GRASS, R ...) on
 Linux.
 
 I have a MAC but at work I am thinking a getting a new machine, running
 Linux. After browsing the net for optional distributions, I came across
 ArchLinux. It immediately caught my attention with the phrase A simple,
 lightweight distribution.

Why get a new machine? -  you could use a real operating system on that Mac ;)
 
 The question is: the fact that it is so lightweight, does it mean it will
 be painstakingly hard to get every bits together in order to have all
 frameworks, all dependencies, etc, working in order to have a fully working
 GIS workstation (QGIS, GRASS, R, ...)?
 
 Thanks.
 Regards,
 Ant?nio

I use Arch at home because I want a distribution which is minimalistic and a 
true rolling release.

Installing packages generally: unless a package is obscure enough that no one 
maintains an Archbuild, it should be easy to install, although if it is only 
available in the AUR you will have to wait for it to compile from source (the 
AUR only provides build scripts, not binary packages).

Installing QGIS: was not at all difficult (and I was surprised by how quickly 
it compiled on my computer which was obsolete a decate ago, compared to on the 
quad core Windows machine at my work :) )

Configuration: with Arch you need to be aware that, as Wikipedia says: The 
design approach of the development team focuses on simplicity from a 
developer's standpoint rather than a user's standpoint - elegance, code 
correctness, and minimalism.  So simple does not mean it just works; put 
the disk in the computer, boot it up and you will have a full desktop with 
every application most people could need; no configuration necessary, as is 
the aim of a distro like Puppy or Ubuntu.  With Arch you need to install all 
the packages you want (window manager, filer, browser, etc) and do a reasonable 
amount of configuration (which means you need to read the instructions!).  Arch 
doesn't automatically install a graphical desktop environment.  It doesn't have 
a gui package manager.  etc.

Having said that, there may be unofficial versions of Arch which provide you 
with a full functional desktop 'out of the box' (I think Archbang was one of 
these, although I have a feeling it is a fully independent distro now).  And I 
guess if you installed Arch, did the basic configuration and installed a 
desktop environment, particularly a major one like KDE or Gnome (I guess most 
people would want one of the forks of Gnome2, rather than Gnome 3), then most 
things would just work.  But personally I like to use a lot of more obscure, 
lightweight packages :)

FWIW if I was happy with a mainstream desktop environment I think I would try 
Linux Mint Debian Edition.

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Re: [Qgis-user] Closure of forum

[Alister Hood]

Hi guys,
Lately it seems to me that too many long threads have been copied to both the 
user and the developer list when they are really oriented towards developers or 
super users such as those who are likely to run brand new experimental 
plugins.  
If the forum is gone, could there be a policy to strongly discourage this?  It 
clogs up the list and I think makes it a lot less friendly for less super 
users.

Regards,
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RE: [Qgis-user] qgis and big raster catalogs

[Alister Hood]

 Date: Fri, 30 Mar 2012 10:59:09 -0700
 From: Duarte Carreira dcarre...@edia.pt
 Subject: [Qgis-user] qgis and big raster catalogs
 To: qgis-user@lists.osgeo.org qgis-user@lists.osgeo.org
 Message-ID:
 19FC4FDFEC50D844B20EB1EF42871FCC2E1B5A5B93@IE2RD2XVS421.red002.local
 Content-Type: text/plain; charset=us-ascii
 
 Hi Qgisers!
 One question: how to get a fast raster catalog in QGIS with a big number of 
 rasters in it? (in this case 400 ecw)
 I am having trouble getting this to work... I tried a vrt catalog and qgis 
 just hangs when I load it.
 Reducing the number of images makes it ok.
 Is this a know limitation of gdal/qgis? Is there another approach to catalogs 
 (not mosaics)?
 What is the recommended approach to see a large number of images in QGIS when 
 working at big scales (zoomed in)?
 
 I thought of the following:
 1-referenced shapefile catalog - like mapserver tileindex shapefiles
 -  Qgis does not support this

Do you mean what I described here?:
http://lists.osgeo.org/pipermail/qgis-user/2012-March/015804.html
Note that if you use an action like I described (instead of using one of the 
plugins) the exact syntax is probably a little different, depending on what 
version of QGIS you are running.  I gave the syntax for QGIS master, which 
enabled the new expression builder expressions fairly recently.

 2-vrt file
 -  Qgis is too slow when there are many images in the catalog
 3-referenced catalog in some other format? Sqllite?
 -  Couldn't find an alternative
 4-just load a directory full of rasters
 -  I didn't even investigate this option since I figure this would be 
 painfully slow every time you would load the directory...
 One last detail: I'm using ecw images, but I'm betting this is not format 
 related...
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RE: [Qgis-user] how to contour delimited text files

[Alister Hood]

 Date: Sun, 25 Mar 2012 12:17:52 -0700
 From: john raskulinecz jera...@hotmail.com
 Subject: [Qgis-user] how to contour delimited text files
 To: qgis-user@lists.osgeo.org
 Message-ID: snt143-w646f6497ebc512133f24e4be...@phx.gbl
 Content-Type: text/plain; charset=iso-8859-1
 
 Dear List, Ihave QGIS 1.7.4 rinning on win 7 and am trying to contour a
 delimeted txt file that shows great. Ithought there was a contour plugin i
 used before but can't locate it now. Does any one know where it might be
 found?Thanks in advance,J.R.P.S. Thanks to all have helped me  in the past

Did you do PluginsFetch Python PluginsRepositoriesadd 3rd party 
repositories?  Did it add the QGIS contributed repository?
You will also need to have the latest matplotlib package from OSGeo4W.  I'm not 
sure if it is installed with QGIS.

 Date: Mon, 26 Mar 2012 06:48:59 +0800
 From: Ramon Andi?ach cust...@westnet.com.au
 Subject: Re: [Qgis-user] how to contour delimited text files
 To: qgis-user qgis-user@lists.osgeo.org
 Message-ID: 7e538a49-fe79-4397-b42e-02b3a3e86...@westnet.com.au
 Content-Type: text/plain; charset=iso-8859-1
 
 [erk, not awake yet. Meant to send to whole list]
 
 
 Hi J.R.,
 
 I still have that plugin on my computer, but it's very broken. The last
 time the contour plugin was mentioned on this list was to say it had been
 deprecated and that will be why you can't find it anymore.
 
 I hope someone else with more knowledge will pitch in. I *think* the
 current recommended path is to use the Raster tools to turn your points
 into a raster and then contour that.
 
 -ramon.

What version of QGIS and Python and matplotlib do you have?  For a time the 
plugin required a recent version of matplotlib which on Windows is only 
available for Python 2.7, but QGIS was still using Python 2.5.  But now that 
QGIS is available on Windows with Python 2.7 and the recent matplotlib, the 
contour plugin works fine.

I don't understand why people say the contour plugin is deprecated - it works 
well and is a lot more convenient than using two GDALtools.  Is it that the 
performance is a lot better with large datasets or something?

Alister
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RE: [Qgis-user] Re: Copy a raster

[Alister Hood]

Save as is only for vector layers.
If you want to copy a raster layer, use the normal tools you'd use to copy any 
other file on your operating system.
If you want to translate it to another file format or another CRS, use the 
tools in the raster menu.

 Date: Thu, 22 Mar 2012 08:57:22 -0700 (PDT)
 From: Jim(tm) lookitsja...@hotmail.com
 Subject: [Qgis-user] Re: Copy a raster
 To: qgis-user@lists.osgeo.org
 Message-ID: 1332431842444-4645293.p...@n6.nabble.com
 Content-Type: text/plain; charset=us-ascii
 
 Try right-clicking the layer in the table of contents and then save as...
 I'm pretty sure that's the QGIS equivalent of Data  Export
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Re: [Qgis-user] Digitizing Idea...

[Alister Hood]

Also see http://hub.qgis.org/issues/3361

 Date: Wed, 21 Mar 2012 10:02:08 -0500
 From: Brad Nesom gisbrado...@live.com
 Subject: Re: [Qgis-user] Digitizing Idea...
 To: maning sambale emmanuel.samb...@gmail.com
 Cc: qgis-user@lists.osgeo.org
 Message-ID:
   CAPD=levrifsjea+uk7ugvpbk4uszdn2q8squp7z9poqe5vm...@mail.gmail.com
 Content-Type: text/plain; charset=iso-8859-1
 
 or autocad rasters snap.
 http://usa.autodesk.com/adsk/servlet/pc/index?id=2600114siteID=123112
 
 On Wed, Mar 21, 2012 at 3:58 AM, maning sambale
 emmanuel.samb...@gmail.comwrote:
 
  A qgis version of Arc' R2V?
 
 
 
 http://proceedings.esri.com/library/userconf/proc98/proceed/to200/pap195/p
 195.htm
 
 
  On Wed, Mar 21, 2012 at 6:01 AM, Gerhardus Geldenhuis
  gerhardus.geldenh...@gmail.com wrote:
   Hi
   Not sure if this has already been done or thought of... probably
  
   While clicking over a very winding river today to digitize an old map
 I
  was
   thinking it would be really useful to combine some graphic package
  features
   found in gimp/photoshop. The idea being that as you click it
   would preferentially follow a certain line/colour. I could thus select
 a
   colour on the map and then just click a rough path over the river with
  the
   software recognizing my intention and adjusting the path the best fit
 the
   line based on the colour I chose or follow the line.
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Re: [Qgis-user] Relative paths

[Alister Hood]

Depending on where the svgs are you might be experiencing this:
http://hub.qgis.org/issues/4056

 Date: Mon, 19 Mar 2012 10:49:13 +
 From: Gerhardus Geldenhuis gerhardus.geldenh...@gmail.com
 Subject: Re: [Qgis-user] Relative paths
 To: Andreas Neumann a.neum...@carto.net
 Cc: qgis-user@lists.osgeo.org
 Message-ID:
 CAATm_0qguiv=gbjHr-77CWztYkuXM5oqx-TEDE3gA0C5-=8...@mail.gmail.com
 Content-Type: text/plain; charset=iso-8859-1
 
 Thanks!
 There seems to be a small bug though because I had to reassign all the
 symbols that I had set previously. To make sure I restarted QGIS but it did
 not had the desired effect.
 
 Regards
 
 On 19 March 2012 10:42, Andreas Neumann a.neum...@carto.net wrote:
 
  Settings -- Options -- Rendering tab -- SVG paths
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Re: [Qgis-user] (no subject)

[Alister Hood]

 Date: Tue, 13 Mar 2012 16:40:11 +0100
 From: Paolo Cavallini cavall...@faunalia.it
 Subject: Re: [Qgis-user] (no subject)
 To: qgis-user@lists.osgeo.org
 Message-ID: 4f5f6a5b.60...@faunalia.it
 Content-Type: text/plain; charset=ISO-8859-1
 
 Il 12/03/2012 22:23, Alister Hood ha scritto:
 
  1. It is common for QGIS plugins to have dependencies which are not
  readily available for Windows (you may need to put in the effort to
 build them yourself).
 
 Not so common: can you provide examples?

Sure, I guess it all depends on what you consider to be common.  I certainly 
haven't seen this problem with _most_ plugins, but it is more than just one or 
two.

Recent examples I can think of are the Contour plugin (I think its dependencies 
are available now, after the switch to Python 2.7 in OSGeo4W), and the 
plugin(s?) that require Rpy or whatever it is that isn't available since the 
switch to Python 2.7.  And for a long time before that on Windows some of the 
plugins that used R (I'm not sure if they're the same ones which can't be used 
now) could only be used with quite an old version of R.
I remember several other examples, but the details don't spring to mind.

There's also the point that on Windows if a plugin has an unusual dependency 
you have to actually go looking for a Windows package, rather than just 
installing it from your distro's package manager.  And I've tried a number of 
plugins with python dependencies that you have to install by manually 
extracting files into the right place from a Windows installer package.  This 
isn't particularly user friendly ;)

  2. Plugins sometimes have Windows related problems.  I guess some of
  the developers don't do much testing for Windows.
 
 I do not think this is a widespread phenomenon.

It might not be.  But if you think people don't generally report bugs on 
windows, who knows?

  4. There seems to be a reasonable history of issues with QGIS that
  only appear on Windows, particularly problems with printing.  Again, I
  think this is due to the developers not using windows.
 
 I would say many Win users do not report and follow bugs, and they are not
 used helping (by coding or by sponsoring) to fix them.

Yes, I guess that's the other contributing factor.

  5. FWIW I get a reasonable number of crashes when I try to run QGIS on
  64 bit Windows 7, and none on 32bit Windows XP.  I do always run a
  self-compiled (on XP) master version of QGIS, not an official build,
  but I don't really see why that would affect running on 64bit Windows
  7.  As you have seen though, some people report no trouble on Windows 7.
 
 I think these are local (compilation) problems. I use regularly qgis on a
 variety of win machines for courses, and I do not encounter major
 problems.

Actually, in the past when I used the OSGeo4W packages I had even more crashes 
on that Windows 7 machine, so I'm wondering if there's something wrong with the 
machine...
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[Qgis-user] (no subject)

[Alister Hood]

On Mon, Mar 12, 2012 at 2:13 PM, john raskulinecz jera...@hotmail.com wrote:
 David,
 You're right,
 ?I wouldn't have got it then but do now. But seriously, does windows 7
 restrict QGIS'S abilities?
 ?J.R.

1. It is common for QGIS plugins to have dependencies which are not readily 
available for Windows (you may need to put in the effort to build them 
yourself).
2. Plugins sometimes have Windows related problems.  I guess some of the 
developers don't do much testing for Windows.
3. As was mentioned, there is no readily available 64bit version of QGIS for 
Windows (you would need to build it and its dependencies yourself).
4. There seems to be a reasonable history of issues with QGIS that only appear 
on Windows, particularly problems with printing.  Again, I think this is due to 
the developers not using windows.  Some of them are also issues with 
dependencies of QGIS, e.g. QT.
5. FWIW I get a reasonable number of crashes when I try to run QGIS on 64 bit 
Windows 7, and none on 32bit Windows XP.  I do always run a self-compiled (on 
XP) master version of QGIS, not an official build, but I don't really see why 
that would affect running on 64bit Windows 7.  As you have seen though, some 
people report no trouble on Windows 7.
6. This is 2012.  You don't need programming ability to use Linux.  You are 
_much_ more likely to need it on Windows, to work around the issues above.  
Just make sure you don't purchase some esoteric hardware that doesn't work with 
Linux.

 FROM YOUR REPLY I BELIEVE I'LL START WITH WINDOWS 7-8 AS MY O.S.

Well, you don't seem to have a reason for doing that, but do what you 
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RE: [Qgis-user] Custom label placing

[Alister Hood]

 Date: Sat, 10 Mar 2012 16:08:31 +
 From: Gerhardus Geldenhuis gerhardus.geldenh...@gmail.com
 Subject: [Qgis-user] Custom label placing
 To: qgis-user@lists.osgeo.org
 Message-ID:
   caatm_0pqjzrgwq6ui4voses+v2952ppnhfwuhp5mw1w-ozv...@mail.gmail.com
 Content-Type: text/plain; charset=iso-8859-1
 
 Hi
 I have done custom label placing on a few of my layers but I am a bit
 confused about how that relates to zoom level.
 
 When you do custom label placing is that only relevant to one zoom level?
 Could you have custom label placing per zoom level? The problem is that I
 have very dense data in some places and need to move labels around to make
 everything look good but that does not seem to relate well for multiple
 zoom levels.

I think if you wanted to have custom labels at different places for different 
zoom levels you would need to make multiple copies of the layer, and have each 
one visible only at certain zoom levels.

Alister
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RE: [Qgis-user] Fine grained zooming

[Alister Hood]

I think he was asking about zooming in on the whole composer layout, not 
changing the scale of a map on the composer layout.
Personally I think it would be good to have most of the same zoom tools 
available in the composer as in the main QGIS window (obviously zoom to layer 
wouldn't make sense in the composer).  I thought there was a ticket for this, 
but I can't find it now...

Alister

 Date: Sat, 10 Mar 2012 11:43:00 -0500
 From: Jake Maier j...@jmforestry.com
 Subject: RE: [Qgis-user] Fine grained zooming
 To: 'Gerhardus Geldenhuis' gerhardus.geldenh...@gmail.com,
   qgis-user@lists.osgeo.org
 Message-ID: 001e01ccfedc$ddb81230$99283690$@m...@jmforestry.com
 Content-Type: text/plain; charset=us-ascii
 
 I think in the composer under map you can specify the scale which should
 give you very precise control
 
 Jake 
 
  From: qgis-user-boun...@lists.osgeo.org
  [mailto:qgis-user-boun...@lists.osgeo.org] On Behalf Of Gerhardus
  Geldenhuis
  Sent: Saturday, March 10, 2012 11:33 AM
  To: qgis-user@lists.osgeo.org
  Subject: [Qgis-user] Fine grained zooming
 
  Hi
  I was wondering if there is a way to do fine grained zooming in the print
  composer. When I zoom in on my map the increments in zoom level is to
  large and I would like it to increase in smaller increments to have a
  better fit in the map composer window. I have tried various key
  combinations but have not yet found a working one
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RE: [Qgis-user] qgis vs grass

[Alister Hood]

 Date: Sat, 10 Mar 2012 18:35:51 -0500
 From: Jake Maier j...@jmforestry.com
 Subject: RE: [Qgis-user] qgis vs grass
 To: 'Noli Sicad' nsi...@gmail.com
 Cc: qgis-user@lists.osgeo.org
 Message-ID: 003e01ccff16$8e8a3f50$ab9ebdf0$@m...@jmforestry.com
 Content-Type: text/plain; charset=us-ascii
 
 Thanks Noli,
 That was exactly the advice I was hoping for.
 I write forest management plan, and work with some biologists on Natural
 Resources Inventories. I provide the mapping with a bit forestry
 consulting as a sideline.
 So I want to show drainage maps  or vegetation maps (airphotos or topomaps
 overlain with different shaded polygons).
 One important future goal is to show particular stands depending on
 information in the database. I also was hoping grass may provide better
 ways to calculate area. I need English system, acres. I think that is not
 provided in QGIS.
 
 Jake

QGIS will report areas in the native units of whatever CRS your layers are in - 
typically meters or I guess feet.  But why would it be a problem to convert 
these to acres?  It should be easy.
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Re: [Qgis-user] qgis vs grass

[Alister Hood]

 Date: Sun, 11 Mar 2012 10:59:07 +1100
 From: Noli Sicad nsi...@gmail.com
 Subject: Re: [Qgis-user] qgis vs grass
 To: Jake Maier j...@jmforestry.com
 Cc: qgis-user@lists.osgeo.org
 Message-ID:
   CADs9uc-3DKdLUaUeZc2dfkqFzeR=my+6bs1_dcbx1fsvua7...@mail.gmail.com
 Content-Type: text/plain; charset=ISO-8859-1
 
 To calculate area - (shapeflie file) in QGIS,
 
 Have a look on the Vector (menu)-Geometry Tools - Export / Add geometry
 columns.
 
 You will get a new shapefile with area and perimetre columns
 
 Simple hack for acres;
 
 Open dbf file of that shapefiles in LibreOffice / OpenOffice add a new
 columns for arces and just just conversion from units to acres.
 
 I think you can add column as well in the attributes table and add the
 formula for conversion tor default unit to acres.

Yes, it is best to use the attribute table instead of messing around with 
Openoffice.
And at least in QGIS master you can skip the Export / Add geometry step - 
just open the attribute table and you can use the field calculator to calculate 
the area and convert it into acres in one step.
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Re: [Qgis-user] Call for Google Summer of Code (GSoC) 2012: Project ideas?

[Alister Hood]

 Date: Thu, 08 Mar 2012 11:55:22 -0800
 From: Alex Mandel tech_...@wildintellect.com
 Subject: Re: [Qgis-user] Call for Google Summer of Code (GSoC) 2012:
   Project ideas?
 To: qgis-user@lists.osgeo.org
 Message-ID: 4f590eaa.8080...@wildintellect.com
 Content-Type: text/plain; charset=UTF-8

 On 03/08/2012 11:41 AM, Stefan Keller wrote:
  Hi
  
  I do have a computer science student who is interested in
  participating at the Google Summer of Code (GSoC) 2012
  Now I have the burden to look for a cool project... Any ideas?
  
  -Stefan

 All the OSGeo related Ideas are linked off of this wiki page
 http://wiki.osgeo.org/wiki/Google_Summer_of_Code_2012_Ideas#The_ideas_pages

 FYI, there is also a GSOC mailing list for osgeo. Of course if you want
 to talk QGIS specific ideas the qgis developer list is the best place
 for that.

 Thanks,
 Alex

Also, if you haven't already, read the GSoC ideas posts at
http://lists.osgeo.org/pipermail/qgis-developer/2012-February/thread.html 
Some of the ideas haven't made it onto the wiki yet.
Note that they don't all show up as one thread, so make sure you don't miss 
half of them ;)

Alister
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Re: [Qgis-user] Actions HowTo

[Alister Hood]

Hi Paulo,

 Hi all.
 We are writing a short howto for the new actions. We would like to add
 some more
 complex example that the usual open the browser with this argument,
 possibly using
 coordinates and functions. Ideas and suggestions welcome.

This one is not particularly complex, but I think it would be good to include 
in standard tutorials or the user manual, as a lot of people would find it 
useful:
With the new tools to run an action directly when clicking on a feature, you 
can reimplement the functionality of the showhideimg plugin (and the old 
raster catalog plugin?).

1) When you have a lot of raster layers spread over a wide area, build an index 
polygon layer with a polygon each raster extent, and the raster filename / path 
in an attribute field.   You can do this using gdaltindex (in QGIS 
RasterMiscellaneousTile index).

2) Set up an action something like this (I'm using the syntax for QGIS master):
qgis.utils.iface.addRasterLayer('[% location %]',os.path.basename('[% 
location %]'))
Now when you use the action tool it loads the raster image  for the location 
that you click.

There are two issues though:

(a) If there are overlapping features, the built-in Run feature action tool 
in QGIS master only runs the action for the first feature found (#5126).  
Similarly, the hotlink plugin only runs one action on one feature each time - 
but at least it lists all the possible actions, so you know that there are 
overlapping features.

(b) Unfortunately, if SettingsOptionsGeneralAdd new layers to selected or 
current group is not set, or the tile index is not in a group, then QGIS 
always selects a new layer when it is added.  So unless you set that option and 
put the tile index in a group, if you then want to load raster images for 
another location (perhaps an adjacent tile) you need to click on the tile index 
layer before using the action tool again.
I'm filed http://hub.qgis.org/issues/5125 about this inconsistency, but I'm not 
sure which behaviour is intended.  If QGIS *is* intended to automatically 
select new layers when they are added, then I guess it wouldn't be too hard to 
write an action that would load the raster layer and then select the index 
layer again.

The other feature of the showhideimg plugin is that if you click in the same 
area again it turns the raster layer off.  I guess this could also be 
implemented in the layer action with a bit of work...


Regards,
Alister
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Re: [Qgis-user] Multiple Map Layout

[Alister Hood]

 Date: Mon, 5 Mar 2012 12:41:17 -0500
 From: Lee Hachadoorian lee.hachadoor...@gmail.com
 Subject: Re: [Qgis-user] Multiple Map Layout
 To: qgis-user@lists.osgeo.org
 Message-ID:
   cannctnjevlwceets2opo4gjwxr-1m-kpy_gf-ekua7_1zz6...@mail.gmail.com
 Content-Type: text/plain; charset=iso-8859-1

 Not sure how this is supposed to work, but here is the behavior I observe.

 In Composer window:

 Add map item (A). Check Lock layers for map item.
 Add map item (B). DO NOT check Lock layers for map item.
 Change symbology in main QGIS window.
 Add map item (C).

 A and B display old symbology. C displays new symbology. But if you make more 
 changes to the symbology, and want to update C, you have to hit Refresh view 
 button. Now, *all* map items, whether or not Lock layers for map item is 
 checked, change to new symbology. Similarly, if you change the layer extent 
 in A or B, they update to display the new symbology.

 So it looks like if you add a map item, it will not update as long as you 
 leave it alone and don't hit Refresh view.

It would also be updated when you print or export the composer layout, and 
maybe (I'm not sure) at other times, like reopening the project or the layout.  
This behaviour is because in the Item properties under Map it is set to 
cache.  Try render or rectangle for less confusing behaviour.

Regards,
Alister
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Re: [Qgis-user] Re: New to QGIS, Best solution?

[Alister Hood]

OK, since you asked ;)

 Date: Thu, 01 Mar 2012 15:31:38 +0200
 From: Derek Hohls dho...@csir.co.za
 Subject: Re: [Qgis-user] Re: New to QGIS, Best solution?
 To: hayamagu...@gmail.com, jonathanmou...@warwickshire.gov.uk
 Cc: qgis-user@lists.osgeo.org
 Message-ID: 4f4f965a02d400024...@pta-emo.csir.co.za
 Content-Type: text/plain; charset=US-ASCII

 I found their conclusion somewhat disappointing.  


 Arc/GIS was launched in 1999, and Arc/INFO (command line predecessor, 
 equivalent to GRASS) in 1982.  GRASS also launched in 1982 and ILWIS launched 
 in 1984, so how they can say these are relatively young does not make sense.

I think the key word there is generally.  I don't think they mean to say that 
GRASS and ILWIS are young - if you've read the whole paper you'll have seen 
them mentioning the maturity and long existence of GRASS and ILWIS.

 Also to keep in mind that the code-base that many of these younger packages 
 build on is much older than their launch dates...

Really?  Which ones?  How much older?
The truth is, most of them _are_ a lot younger.  Incidentally, this means that 
papers like this can go out of date very quickly - think how much QGIS has 
improved since it was written.

 I think the less overall GIS functionality is due to the smaller user base 
 and number of contributers, and has nothing to do with age per se.

And to put on Paulo's hat: due to having less $money$ spent on development.  I 
don't have a clue how much less, but I'd guess several orders of magnitude at 
least.  Please support QGIS development... ;)

The main problems I have with the conclusion are:
1) I can't see that the paper actually provides a case for the statement that 
FOS software generally has less functionality than proprietary high-end GIS.
2) They don't define high-end.  There are all sorts of references in the rest 
of the paper e.g. to Mapinfo, which imply they just mean any mainstream 
proprietary GIS.  But I suspect that is not what they mean: Mapinfo for example 
is pretty pathetic without a bunch of additional paid add-ons.  Which 
combinations of proprietary software and addons are required for high-end 
functionality?

 My 2c!  But I would really like to hear from others on this topic.

   03/01/12 2:09 PM 
 The paper can be accessed directly with no subscription here:
 http://www.geo.uzh.ch/~sstein/manuscripts/sstein_freegitools_ecoinf2009.pdf

 An interesting read. Highlights from the Conclusion:

 We report that due to the relative youth of  the eight evaluated FOS GIS 
 projects, they generally tend to have less overall GIS functionality than 
 proprietary high-end GIS...  However, on the positive side they all 
 provide the basic GIS functions needed in LSE[Landscape Ecology]; they are 
 easy to  customise; a growing number of specialised functions and plug-ins 
 already exists for specific LSE applications; and there is a growing 
 community of practitioners willing to freely share their ideas, code and 
 expertise.

Alister
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Re: [Qgis-user] FW: Newbie question - profile tool

[Alister Hood]

 On Tue, Feb 28, 2012 at 4:07 PM, Bis Nulama bisnul...@hotmail.com wrote:



 Hello to everybody! I am a new qgis user (I am running qgis 1.7.4 on 
 windows XP) I'm sorry if the same questions has been already answered 
 somewhere else in this ML...

 I am using the grass plugin. I would like to get the profile of a 
 street (I have the shapefile of it) from a digital elevation map.
 The profile should be a table of numbers in which I have on the x axis 
 the chainage and on the y axis the elevation.
 The output could also be a dxf image file... Is this possible?

 I also would like to display the legend of raster maps in my layout, 
 but I do not understand how to do this...

 Thank you for your help!

 laura

I guess that raster legends are only supported in QGIS Master (i.e. the latest 
development code).  If you want you can install this using the OSGeo4W 
installer, but it is not guaranteed to be stable.  However, these legends are 
only really suitable for indexed rasters (or whatever they are called).

For typical rasters showing something like elevation you would instead want to 
use the 1-band raster colour table and Colour scale bar plugins.  I think 
someone may have mentioned the other day that the functionality of the Colour 
scale bar plugin is now included in the 1-band raster colour table plugin.

Alister

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[Qgis-user] RE: Qgis-user] openlayers layers without properties is it possible to alter brightness/contrast

[Alister Hood]

 Date: Mon, 27 Feb 2012 17:15:02 +
 From: M.E.Dodd m.e.d...@open.ac.uk
 Subject: [Qgis-user] openlayers layers without properties is it
   possible to alter brightness/contrast
 To: qgis-user@lists.osgeo.org qgis-user@lists.osgeo.org
 Message-ID:
   9932a16f9ce9264fac3f2e0e008e1221012d984...@kieldercms1.open.ac.uk
 Content-Type: text/plain; charset=us-ascii

 Is it possible to change the display of e.g. openstreetmap background layer, 
 I would like to plot data over this but its rather aggressive in the 
 background so I would like to grey it down.

You mean like this?:
http://underdark.wordpress.com/2012/02/25/light-styles-for-osm-layers-in-qgis/
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Re: [Qgis-user] .Net Control and more

[Alister Hood]

 Date: Mon, 27 Feb 2012 09:41:29 -0800
 From: Alex Mandel tech_...@wildintellect.com
 Subject: Re: [Qgis-user] .Net Control and more
 To: qgis-user@lists.osgeo.org
 Message-ID: 4f4bc049.9000...@wildintellect.com
 Content-Type: text/plain; charset=ISO-8859-1

 On 02/27/2012 09:10 AM, David Speyer wrote:
  Thanks for getting back to me Alister!
  
  Now I have more specific questions for the group:
  
  1)  What map formats are supported?  In particular are TAB files supported?
  
 Anything supported by GDAL/OGR, www.gdal.org

Note that in the case of vector TAB files, support is for reading and also 
writing of new layers.  Editing of an existing TAB is not currently possible.

  2)  Can QGIS be used as a Control - Is there an existing tool that can 
  easily be wrapped into a .Net C# Windows Control?   (The equivalent of 
  MapInfo Extreme). 
  
 Yes, but only C++ and python

  3)  Can a floor plan jpg file be layered over a blank map control and then 
  registered via TAB file using minimally three points on the map with 
  Latitude and Longitude?  Then with mouse click know all the other 
  coordinates on the map?   Is this a simple process?  (Again this can be 
  easily done with MapInfo Extreme).
 Yes, georegistration tool is built in.

Note that registration is not _via a TAB file_.  QGIS only supports TAB files 
that actually contain vector data, not the TAB files that MapInfo uses to refer 
to any non-TAB data (vector or raster).
Registration is either by creating a new file which contains the georeferencing 
information (this would need to be a geotiff or something which supports that), 
or via an ESRI style world file (these often have extensions like .wld .jgw 
.tfw etc).  I seem to remember that MapInfo is too useless to understand world 
files, but I could be wrong (maybe it was too useless to understand the 
built-in georeferencing in ecw files or something?).
Both world files and the georeferencing TAB files are plain text, so you can 
create one from the other if necessary.

  4)  Web App and Stand Alone Support?
 
 There is work on Web Client to correspond with QGIS Server. Desktop 
 standalone is the primary mechanism for all current deployments.

I think there are _2_ web clients now :)

  5)  Has Layering - Ability to draw several layers of routes and various 
  symbols with different colors onto to the displayed map - programmatically 
  controlled?  Legend? (Again using as .Net Control).
  
 Yes, but again only C++ and python

  6)  Access to Maps (can you get from web database?) 
 
 Yes, WMS, WFS, Tiles, Postgis, etc.. are all supported.

  7)  Report Generation Capabilities:  If we were to wrap QGIS, is there a 
  wide variety of reports that can be generated (i.e. letting the end user 
  create custom map-based reports)?
 
 Only a few such plugins exist but could be easy to write.


 I think you are more likely to want to look at SharpMap and MapWindow which 
 are .net applications and tools under open source licenses.
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[Qgis-user] Visualize Raster Timeseries with Standard Min/Max Values

[Alister Hood]

 Date: Sun, 26 Feb 2012 08:47:49 -0800 (PST)
 From: dpan davepan...@yahoo.com
 Subject: [Qgis-user] Visualize Raster Timeseries with Standard Min/Max
   Values
 To: qgis-user@lists.osgeo.org
 Message-ID: 1330274869657-4510586.p...@n6.nabble.com
 Content-Type: text/plain; charset=us-ascii

 Hi all,

 I have raster data for a single, continuous variable (e.g. tmean in May) for
 a particular region of interest. I'd like to visualize the progression of
 May tmean across several years with a grayscale or color ramp, to show how
 it changes through time.

 qGIS by default stretches and clips each raster's grayscale ramp to the Min
 and Max values for that raster. So each ramp has different Min/Max,
 complicating comparison between years. 

 I thus want to standardize the Min/Max values across the entire dataset. The
 only way I've found to do this is to determine the Max and Min values for
 the entire dataset, then enter those Min/Max values in Layer
 PropertiesStyle for each raster.

 This is obviously impractical for large datasets (even for small ones,
 really). How do I do this correctly, so I can easily generate visual
 timeseries of a variable of interest?

You should be able to just style one layer with sensible Min/Max values, save 
the style, and make a series of copies of the resulting .qml file, named after 
each raster image.  You should be able to make those copies at the command 
prompt with a single command ;)
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RE: [Qgis-user] New to QGIS, Best solution?

[Alister Hood]

Hi David,
It really depends on:
- what you need to do, and
- what addons you would have for MapInfo or ArcGIS.

I don't do a lot of GIS work, and I have no experience with ArcGIS, but I do 
have MapInfo.
I gather some features of MapInfo are supposed to be quite good for things like 
inputting and managing data, which is why it has been quite popular in local 
government (at least in NZ and Australia).
As I see it MapInfo's main downsides are:
1) It isn't very powerful - you need to buy all sorts of addons if you really 
want to do much in it.  (I guess with QGIS you also need to use something like 
GRASS for some things.  The trouble with MapInfo is that it seems like you're 
not really getting anything for your dollar.)  If some of the major addons were 
included with MapInfo then it would be a lot easier to understand why people 
buy it.
2) In some respects e.g. map-making it is very user-unfriendly.  Especially the 
problems with the way its layout windows are connected to map windows.  And 
QGIS is just generally much nicer to use than MapInfo.
3) It doesn't handle data in all sorts of different formats nicely like QGIS 
does.

I generally don't even think about using MapInfo these days - I haven't 
bothered to install the last couple of updates. And MapInfo isn't going 
anywhere fast - like someone mentioned in the link below, they seem to put all 
their effort into marketing, while the software stays stuck in the mid '90s, 
with little indication that it will ever really improve.
The one MapInfo feature that I currently miss in QGIS is the ability to perform 
operations in the Object menu like Split on selected features - ftools in 
QGIS only operates with whole layers.

I guess MapInfo is _a little_ less buggy than QGIS, but not as much as I'd 
expect, especially given that it doesn't really seem to do much, and there is 
so little change in each release.

You might be interested in some of the discussion at
http://woostuff.wordpress.com/2011/07/07/browser-wars-qgis-vs-mapinfo-11/

But I'm not sure how relevant this all is to you - it sounds like you are 
thinking of building some sort of standalone application or web-based solution. 
 How would that work with .Net and QGIS?
If you're integrating with .NET I imagine you should check out Mapwindow.  Have 
you?
Mapwindow is quite nice, but it generally* doesn't seem to be as powerful or 
user-friendly as QGIS.

*For some specific things there are very good plugins for Mapwindow that aren't 
available for QGIS.

Regards,
Alister


 Date: Thu, 23 Feb 2012 15:16:01 +
 From: David Speyer david.spe...@pctel.com
 Subject: [Qgis-user] New to QGIS, Best solution?
 To: Qgis-user@lists.osgeo.org Qgis-user@lists.osgeo.org
 Message-ID:
   
 E569CBF1CCBAED43B04EC1569C80777F1EDCB3@mbx025-w1-ca-1.exch025.domain.local
   
 Content-Type: text/plain; charset=us-ascii

 Hello -

 I am still in the middle of evaluating various map solutions and would find 
 it *very* helpful if anyone could compare the 
 features/functionality/reliability of Qgis to MapInfo Pro or ArcGIS  or even 
 Google Maps APIs.  I'd be integrating this with Microsoft based UIs (.Net).  
 We are already using MapInfo with MapExtreme (a version that is a few 
 versions old).

 Thanks!
 David.
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[Qgis-user] RE: Qgis-user Digest, Vol 72, Issue 43

[Alister Hood]

Hi Richard,

If these same people currently use proprietary GIS they probably use all sorts 
of third party scripts and addons for it.  I'm interested - how do they cope 
with security for them?  I'm sure they don't usually read all the source code.  
From what I can see, security in the proprietary world really comes down to 
trust and system administration.

 I don't know if there is any innate protection within QGIS or python
I'm far from an expert, but I wouldn't have thought it would really be 
practical to have such protection.  Does ArcGIS or something claim to have it?

I guess for QGIS it is some combination of:
- the web of trust in the QGIS community
- checking the code, since it is always available
- trusting that _someone_ else will probably look at the code, and even if they 
don't, the fact that they are likely to makes QGIS less of a target for malware 
authors (Also QGIS is not a prime target simply because it hasn't achieved 
world domination yet...)
- keeping backups and therefore not needing to worry as much about security

So far I'm pretty sure QGIS hasn't had any problems with malware etc.  The 
_real life_ problem is when plugins are broken by changes to QGIS, especially 
when they are orphaned (unmaintained).  Oh - and in some cases plugins not 
being compatible with Windows (or Mac) because nobody bothers to package the 
dependencies for Windows, or perhaps just because the plugins have only been 
tested on real operating systems ;) and they need changes to work around some 
feature in Windows...

With QGIS 2 I think the intention is to try to get people to all use the main 
repository, instead of a whole lot of third party repositories.  I don't know 
what people will have to do before they are allowed to upload their code to the 
repository.  Can anyone point us to the answer?


 Date: Sat, 18 Feb 2012 11:08:55 -0500
 From: Richard Males rbma...@gmail.com
 Subject: [Qgis-user] QGIS and Computer Security (Windows)
 To: qgis-user@lists.osgeo.org
 Message-ID:
 CAGwArwYi-mecHHmNU34ojKhGno=o_wtvcwfezenphzo19n0...@mail.gmail.com
 Content-Type: text/plain; charset=ISO-8859-1
 
 I am interested in promoting the use of QGIS, but some users have
 expressed concern about computer security issues, particularly in
 respect to the use of plug-ins.  The concern is that a downloaded
 plugin may contain malware, activate malicious code, etc.  I don't
 know if there is any innate protection within QGIS or python against
 bad behavior on the part of plugins, or if this is a trust issue.
 
 I have searched online and in the forums for a discussion of this
 issue.  I posted on the help forum, the responses were anecdotal in
 nature (e.g., I have been using QGIS for a few years, never had a
 problem), not technical.
 
 I would very much appreciate any thoughts on if/how QGIS currently
 deals with this, or references to documentation or postings on the
 issue.
 
 Thank you.
 
 R. Males
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RE: [Qgis-user] Logarithmic functions

[Alister Hood]

 Date: Wed, 15 Feb 2012 16:00:05 -0800 (PST)
 From: magerlin m...@ramboll.dk
 Subject: [Qgis-user] Logarithmic functions
 To: qgis-user@lists.osgeo.org
 Message-ID: 1329350405948-4474344.p...@n6.nabble.com
 Content-Type: text/plain; charset=us-ascii

 I am working with traffic noise and since the dB unit for measuring noise is
 logarithmic I often need the logarithmic function, but it does not seem to
 exist neither in field calculator nor in Raster Calculator?
 
 In Raster Calculater I can write log(xxx), but it just returns xxx. In field
 calculator I will get an error if I write log(xxx) or the like.

I don't know about the Raster Calculator, but it seems the field calculator 
does not have log functions in QGIS 1.7.3
In QGIS master there is ln(), log(a,b) and log10().  But there seems to be a 
bug with log(a,b)...
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RE: [Qgis-user] Google Earth

[Alister Hood]

Are you sure you need to translate them?
You can't just use on-the-fly reprojection?

From: Chuck Young [mailto:wylie1...@gmail.com]
Sent: Saturday, 11 February 2012 5:25 p.m.
To: Alister Hood
Subject: Re: [Qgis-user] Google Earth

Alister:  I got the Google map up and was able to translate the Tiger Roads 
layer to the Google Mercater ??  CRS and it works very well.  However I have 
tried to translate the other layers to the same format and nothing works.  
Seems silly.  I have gone back to the original files and the Tiger water layer 
will not translate correctly.  I had this problem before and eventually got it 
correct but it seems like after doing one translation QGIS doesn't feel like 
doing another.  At least in the same session.  I have shut down the application 
and restarted but still no good.

Any ideas?

Thanks

Chuck
On Thu, Feb 9, 2012 at 12:14 AM, Chuck Young 
wylie1...@gmail.commailto:wylie1...@gmail.com wrote:
Thanks again!   I installed the plugin but haven't gotten to try it yet.  I'll 
let you know how it turned out.  I will probably have more questions so I 
really appreciate your help.

Thanks again.

Chuck

On Wed, Feb 8, 2012 at 7:12 PM, Alister Hood 
alister.h...@synergine.commailto:alister.h...@synergine.com wrote:
Hey - remember to reply to the list :)

 From: Chuck Young [mailto:wylie1...@gmail.commailto:wylie1...@gmail.com]
 Sent: Thursday, 9 February 2012 2:16 p.m.
 To: Alister Hood
 Subject: Re: [Qgis-user] Google Earth

 Thanks for the quick reply, Alister!   Are you saying that I can through the 
 openlayers plugin, that I can directly see the Google Earth (free version)  
 images as a background for my selected area? If so I will try it.

Yes, it just opens a connection to the Google earth data as a new layer.  It 
doesn't require the Google earth software.
I don't know if there even is a distinction between the quality of the images 
you _see_ with the free vs professional Google earth editions.  Isn't it just 
the quality of the images you can _save_?  Anyway, I don't know which one it 
corresponds to.

 Does it connect to the Google map server etc and allow me to go to the area I 
 want as if I were directly viewing the map in Google Earth?
It doesn't provide any mechanism for searching for a location - you need 
another layer to search in or zoom to, or you can paste coordinates, or zoom in 
from viewing the whole world

 I will look at it with these ideas in mind.  And again, Thanks

 Chuck
 On Wed, Feb 8, 2012 at 6:05 PM, Alister Hood 
 alister.h...@synergine.commailto:alister.h...@synergine.com wrote:
  Date: Wed, 8 Feb 2012 17:07:02 -0700
  From: Chuck Young wylie1...@gmail.commailto:wylie1...@gmail.com
  Subject: [Qgis-user] Google Earth
  To: Qgis-user@lists.osgeo.orgmailto:Qgis-user@lists.osgeo.org
  Message-ID:

  cakckdbsm6du0ed3nn9jcwiwrggnz3fgdxc5ndbu+yfdwck9...@mail.gmail.commailto:cakckdbsm6du0ed3nn9jcwiwrggnz3fgdxc5ndbu%2byfdwck9...@mail.gmail.com
  Content-Type: text/plain; charset=iso-8859-1
 
  I hope someone will take the time to help me understand the use of Google
  Earth images and how to acquire them and use them in QGIS.
 
  I have been using Google Earth free version for some time. The images are
  clear and very good resolution.  I recently purchased a copy of the area I
  need that is in MrSid format.  However the resolution is only good to a
  point.  Then it is really pixelated at the zoom level I really need.
  I understand that I need a paid Pro subscription to Google earth, but I
  don't know what else and how to go about the actual download or capture of
  the map segments I need. I have seen discussion on the subject and the file
  format etc. but just need to get the pieces together.
 You can directly connect QGIS to the Google (or Bing or Yahoo) satellite 
 layer using the openlayers plugin.

 But Google doesn't own the imagery, and even if you get Google Earth Pro you 
 aren't actually allowed to use the imagery to create derivative works.  
 Exactly how far the permitted use extends will depend on what you are using 
 it for and the law in your country, but my understanding is that it is 
 typically about as far as using it to display the location of your 
 organisation or event in advertising material.
 I have seen rumours that you are allowed to do more with the Yahoo imagery, 
 but when I looked I don't think I could even find any information about its 
 licensing.

 Regards,
 Alister



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FW: [Qgis-user] Google Earth

[Alister Hood]

Copying to the list...

 From: Chuck Young [mailto:wylie1...@gmail.com] 
 Sent: Monday, 13 February 2012 5:52 a.m.
 To: Alister Hood
 Subject: Re: [Qgis-user] Google Earth

 I had that set to on the fly but the layers would load and show so far off 
 the range that when you go to extents the Google satellite layer would 
 finally display up to eight copies of the continents. and my little smudge 
 was so small that I could never locate it.   I finally decided to just 
 recreate the layers I need as they only require a couple of days to get in.  
 It is a lot of work but less than fighting the projection then doing it.   I 
 tried both re-projection and on the fly. I tried setting the project CRS to 
 Google Mercator and different settings and anything else I could think of.  

 I would have thought that because the Tiger roads layer worked the water 
 layer would, but no.  So I will go ahead without that layer for now.
 Thanks for your help and efforts.  I really appreciate your kindness. If you 
 think of anything else I could try I would like to hear.

 Thanks again!

 Chuck
 
  On Sun, Feb 12, 2012 at 2:35 AM, Alister Hood alister.h...@synergine.com 
  wrote:
  Are you sure you need to translate them?
  You can't just use on-the-fly reprojection?
  ...
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RE: [Qgis-user] Google Earth

[Alister Hood]

 Date: Wed, 8 Feb 2012 17:07:02 -0700
 From: Chuck Young wylie1...@gmail.com
 Subject: [Qgis-user] Google Earth
 To: Qgis-user@lists.osgeo.org
 Message-ID:
   cakckdbsm6du0ed3nn9jcwiwrggnz3fgdxc5ndbu+yfdwck9...@mail.gmail.com
 Content-Type: text/plain; charset=iso-8859-1

 I hope someone will take the time to help me understand the use of Google
 Earth images and how to acquire them and use them in QGIS.

 I have been using Google Earth free version for some time. The images are
 clear and very good resolution.  I recently purchased a copy of the area I
 need that is in MrSid format.  However the resolution is only good to a
 point.  Then it is really pixelated at the zoom level I really need.
 I understand that I need a paid Pro subscription to Google earth, but I
 don't know what else and how to go about the actual download or capture of
 the map segments I need. I have seen discussion on the subject and the file
 format etc. but just need to get the pieces together.

You can directly connect QGIS to the Google (or Bing or Yahoo) satellite layer 
using the openlayers plugin.

But Google doesn't own the imagery, and even if you get Google Earth Pro you 
aren't actually allowed to use the imagery to create derivative works.  
Exactly how far the permitted use extends will depend on what you are using it 
for and the law in your country, but my understanding is that it is typically 
about as far as using it to display the location of your organisation or event 
in advertising material.
I have seen rumours that you are allowed to do more with the Yahoo imagery, but 
when I looked I don't think I could even find any information about its 
licensing.

Regards,
Alister
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[Qgis-user] RE: Qgis-user Digest, Vol 72, Issue 9

[Alister Hood]

Hi,

 Date: Sat, 04 Feb 2012 15:02:06 +0100
 From: Tim Michelsen timmichel...@gmx-topmail.de
 Subject: [Qgis-user] Re: Publishing my map
 To: qgis-user@lists.osgeo.org
 Message-ID: jgjdou$cfq$1...@dough.gmane.org
 Content-Type: text/plain; charset=ISO-8859-1; format=flowed
 
  1.) Make a PDF of the map. (the tools for making layer controls in PDFs
  exist, but are not easy to implement manually)
 is it possible to publish a georeferenced PDF with layer functionality
 from QGIS?

No.
If you have a new GDAL built to support it, you can _open_ a georeferenced PDF 
in QGIS.  It is actually rasterised, so not ideal.
I don't think there is any Free Software solution for _creating_ georeferenced 
PDFs.

Regards,
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Re: [Qgis-user] Re: Mapbooks with Easyprint

[Alister Hood]

Hi,

 Date: Thu, 05 Jan 2012 11:34:44 +0100
 From: Wolf-E. Altmann mailingli...@envitelligence.de
 Subject: Re: [Qgis-user] Re: Mapbooks with Easyprint
 To: magerlin m...@ramboll.dk, user Qgis Qgis-user@lists.osgeo.org
 Message-ID: 4f057cc4.9040...@envitelligence.de
 Content-Type: text/plain; charset=ISO-8859-1; format=flowed
 
 Am 04.01.2012 10:00, schrieb magerlin:
  Hi
 
  The EasyPrint mapbook is a very usefull feature!
 
  Could one add a feature to reverse the page order in the final PDF (when
  ticking Print single file)?
 
  I am working with a road section running north-south and in the pdf the maps
  are shown from south to north.
 
  I would find it more logical to have the reverse order so north will be at
  the top of the document and south at the bottom when I scroll through the
  PDF.
 
  And I would also like the possibility to get the overview map as first page?
 
 
 
  -
  Regards Morten
 
  (Qgis 1.7.3 standalone and Win 7)
  --
  View this message in context: 
  http://osgeo-org.1803224.n2.nabble.com/Mapbooks-with-Easyprint-tp6475315p7149688.html
  Sent from the qgis-user mailing list archive at Nabble.com.
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 Hi Morten,
 
 if you use Linux and your mapbook hasn't to much pages you can try PDF 
 Mod for manually reordering PDF-Documents.
 
 Wolf

Or you could try Pdfshuffler or Final Page, both available on sourceforge.  I 
think in theory any of them could work on Windows, but I know there is already 
a (third party) windows installer for pdfshuffler (if you can find it - it is 
linked from one of the bug reports).

But if you just want to reverse the pages, the easiest thing to do is open the 
pdf and print to file, selecting the option to reverse the page order.  On 
windows and some other systems you would need to install a virtual pdf 
printer such as PdfCreator (also available on sourceforge) and print to that.

BTW I think if you wanted to file a bug report or a patch for easy print this 
would be the place: http://code.google.com/p/cataisrepository/issues/list


Alister
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Re: FW: [Qgis-user] problems with layers from one source

[Alister Hood]

Two things to keep in mind:

- When the option SettingsOptionsCRSCoordinate reference system for new 
layers is set to Use project CRS or Use default CRS..., any layers you add 
which don't come with CRS information will _look in QGIS_ like they have the 
same CRS... except that they won't all show up in the same place on the map.

- In at least some recent versions of QGIS (and perhaps depending on the render 
caching setting or something), when you change the CRS of a layer the map is 
not automatically refreshed.  You need to do something to force it to be 
refreshed - zoom or pan slightly, or add a layer or something.  (And of course 
the layers will stay in the same location if you do not have 'on the fly' 
reprojection enabled in the project properties... which is different from 
enabling it by default for new projects).

Alister


 Date: Sat, 17 Dec 2011 12:53:48 -0600
 From: Caroline Rendon caroline.t.ren...@gmail.com
 Subject: Re: FW: [Qgis-user] problems with layers from one source
 To: Gerardo Jimenez gej...@hotmail.com
 Cc: qgis-user@lists.osgeo.org
 Message-ID:
   CAK6gUprZ-N5t6rn4boCUUHsR276Rorsz7Yy5Oxu=U7U0W-
 h...@mail.gmail.com
 Content-Type: text/plain; charset=iso-8859-1
 
 Okay, I'll take another look. I thought I'd adjusted the CRS for all
 layers
 but I must be missing something. Thanks for your help!
 
 Caroline
 
 On Sat, Dec 17, 2011 at 11:31 AM, Gerardo Jimenez
 gej...@hotmail.comwrote:
 
 
 
  Gerardo Jiménez Delgado
  Instituto de Investigaciones Antropológicas
  Universidad Nacional Autónoma de México
  Ciudad Universitaria s/n
  Coyoacan 04510 Mexico City
  Mexico 56 22 95 16
 
  --
  From: gej...@hotmail.com
  To: caroline.t.ren...@gmail.com
  Subject: RE: [Qgis-user] problems with layers from one source
  Date: Sat, 17 Dec 2011 12:30:49 -0500
 
 
   I am sorry to differ. They can not be in the same CRS. 
  ...
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Re: [Qgis-user] Re: ecw problems

[Alister Hood]

 Date: Mon, 05 Dec 2011 10:40:32 +
 From: Giovanni Manghi giovanni.man...@gmail.com
 Subject: Re: [Qgis-developer] Re: [Qgis-user] Re: ecw problems
 To: pieri70 pietro.ros...@arpa.fvg.it
 Cc: qgis-user@lists.osgeo.org
 Message-ID: 1323081632.2277.19.camel@sibirica
 Content-Type: text/plain; charset=UTF-8
 
 On Mon, 2011-12-05 at 01:15 -0800, pieri70 wrote:
  Hello  Jürgen
  which kind of compressed raster do you use instead of ECW (if you use
  any..??

Personally I'd try JPEG2000 (using openjpeg).  But you might need to build 
openjpeg and gdal yourself :(
 
 try
 
 GeoTIFF TILED=YES COMPRESS=JPEG QUALITY=75 and overviews.

Do you use JPEG compression for maximum compatibility?  I would have thought 
you'd get much better results with something else.


Alister
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Re: [Qgis-user] Exporting a raster layer from QGis with symbology

[Alister Hood]

 Date: Sat, 3 Dec 2011 08:51:15 +0100
 From: Patrice Vetsel patr...@kagou.fr
 Subject: Re: [Qgis-user] Exporting a raster layer from QGis with
   symbology
 To: qgis-user@lists.osgeo.org
 Message-ID: e24ea0f9-f4bf-410e-81fc-bdcf4be60...@kagou.fr
 Content-Type: text/plain; charset=iso-8859-1
 
 May be by using pdf printing.
 Is it Qgis supporting geo-pdf ?

No.
 
 Regards
 
 Le 3 déc. 2011 à 00:51, Nyall a écrit :
 
  Hi all -- hoping someone can help me out here.
 
  Does Qgis have a way of exporting raster layers with the symbology
  applied? 

I don't think so.  Not a georeferenced image or at the original resolution.
You may want to check and add a feature request for it if there isn't one 
already. 
But I wouldn't be surprised if it was possible to do it from the Python console.

  Since it's nice and easy to make good looking classification
  layers through qgis, I'd like to export these layers to a
  georeferenced image format which I can split up into TMS tiles.
 
  From my hunting around, the only way I could find for exporting
  rasters (with the symbology applied) is to create a composer window
  and save the layout from there. However, this approach doesn't allow
  me to maintain the original resolution and georeferencing information
  that the original raster contains.

You can also do FileSave as Image in the main QGIS window.
If you zoom to layer it should be relatively easy to write a script to pan 
with the arrow keys (probably easiest with Autohotkey if you are using 
Windows), save as image repeatedly and then stitch the images together (which 
may be easiest with Fiji
http://fiji.sc/wiki/index.php/Stitch_and_Align_a_sequence_of_grid_images_Tutorial
 )

Or maybe it would be possible to use qgis-mapserver and a trick like the last 
post at 
http://ask.metafilter.com/148540/When-I-said-birds-eye-view-thats-not-quite-what-I-meant


Alister
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Re: [Qgis-user] Re: ecw problems

[Alister Hood]

 Date: Fri, 02 Dec 2011 12:46:03 +
 From: Giovanni Manghi giovanni.man...@gmail.com
 Subject: Re: [Qgis-user] Re: ecw problems
 To: Nathan Woodrow madman...@gmail.com
 Cc: qgis-user@lists.osgeo.org
 Message-ID: 1322829963.3342.41.camel@sibirica
 Content-Type: text/plain; charset=UTF-8
 
 
  This is very strange as a lot of other open source GIS programs ship
  the ecw libs with each release, uDig; MapServer; etc.  Are they
  breaking the licences?  
 
 I'm not sure if they break the license, on the other hand how they can
 be open source if they include closed software?
 
 cheers
 
 -- Giovanni --

- Some of them (like uDig) are LGPL, not GPL.  Does this make a difference here?

- I'm guessing they probably don't include closed software, but are just 
_distributed_ with it.  They are probably linked against GDAL (which has an MIT 
license), and distributed along with a GDAL plugin which is linked against the 
main GDAL library and the ECW libs.  I don't think ECW support is normally 
built into the main GDAL library.  I'm not sure what aspects of this are 
relevant ;)

Alister
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[Qgis-user] Re: Proposed attribute table UI redesign

[Alister Hood]

 Date: Thu, 17 Nov 2011 09:18:01 +0200
 From: Tim Sutton li...@linfiniti.com
 Subject: Re: [Qgis-developer] Re: [Qgis-user] Proposed attribute table
   UI  redesign
 To: Martin Dobias wonder...@gmail.com
 Cc: qgis-user qgis-user@lists.osgeo.org,
   qgis-develo...@lists.osgeo.org
 Message-ID:

calcnqkyussmcjscxhwcq+j6y0rgwcyyzb6granpq4nwenm4...@mail.gmail.com
 Content-Type: text/plain; charset=ISO-8859-1
 
 Hi
 
 On Mon, Nov 14, 2011 at 3:41 PM, Martin Dobias wonder...@gmail.com
wrote:
 
 8-snip---
 
  nice stuff. One more thing I have been thinking about is that we
could
  do the search in a way the browsers nowadays do it: keep the widgets
  for search hidden by default, saving further vertical space. The
  search bar would be opened only after clicking a search button or
  pressing the usual ctrl+F or / shortcut.
 
 
 Martin what is the possibility of making the search tool work across
 all columns efficiently? I know from training courses I give that
 selecting the appropriate column when making a search is a common
 stumbling block for many users.
 
 Regards
 
 Tim

Hi Tim,
Can I suggest adding an all columns item to the drop-down column
selector, rather than removing it?
All columns could be selected by default.

Regards,
Alister
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Re: [Qgis-user] Proposed attribute table UI redesign

[Alister Hood]

Hi Ivan,
What version are you using?
It works for me in current trunk... well, almost.  The only case where
it doesn't update is when I deselect features by ctrl-clicking on rows
in the attribute table.
Note: if this _is_ fixed then #2065 can be closed.

Alister

 Date: Mon, 14 Nov 2011 18:26:56 +0100
 From: Ivan Mincik ivan.min...@gista.sk
 Subject: Re: [Qgis-user] Proposed attribute table UI redesign
 To: Nathan Woodrow madman...@gmail.com, qgis-user
   qgis-user@lists.osgeo.org
 Message-ID: 4ec14f60.7060...@gista.sk
 Content-Type: text/plain; charset=ISO-8859-1
 
 -BEGIN PGP SIGNED MESSAGE-
 Hash: SHA1
 
 Nathan, thanks for Your proposal, I like it too.
 
 I have one note to current 'Show selected only' check box behavior.
 Currently, when enabled, it does not take to account updates in list
of
 searched records.
 
 Example:
 1. Open attribute table
 2. Enable 'Show selected only'
 3. Search for some record
 4. Attribute table is empty until re-enabling 'Show selected only' or
 pressing 'Move selection to top'
 
 For a long time I am not sure if it is bug or feature. May it can be
 fixed/changed when implementing Your work.
 
 
 - --
 Ivan Mincik, Gista s.r.o.
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RE: [Qgis-user] Plugins broken!

[Alister Hood]

Hi Daniel,
What operating system are you using?  Windows?
1. This conversation should help with the profile plugins:
http://osgeo-org.1803224.n2.nabble.com/Profile-Tool-td6745484.html

2. On Windows QGIS is still built with Python 2.5, but the latest
versions of the Saga python bindings are for Python 2.6 or 2.7
You may have success using a slightly old version:
http://sourceforge.net/projects/saga-gis/files/SAGA%20-%202.0/SAGA%202.0
.5/saga_2.0.5_bin_mswvc9.zip/download and
http://sourceforge.net/projects/saga-gis/files/SAGA%20-%202.0/SAGA%202.0
.5/saga_2.0.5_python25_mswvc.zip/download
To install the python bindings, open the zip, go into the subfolder
Python25\Lib\site-packages\, and extract its contents to
C:\osgeo4w\apps\Python25\Lib\site-packages (or similar).
I was able to run `import saga_api` at a Python prompt, so it seems the
Python bindings were working, but when I tried to turn the processing
framework panel on in QGIS I got some error about something not being a
grid.  I lost interest at about this point - not sure if the problem is
with the QGIS saga plugin or what.  Note that I only tried with QGIS
trunk.

Alister
 
 Date: Mon, 7 Nov 2011 14:30:18 -0500
 From: Daniel Alejandro Pacheco danny__al...@hotmail.com
 Subject: [Qgis-user] Plugins broken!
 To: qgis-user@lists.osgeo.org
 Message-ID: blu0-smtp151be4726f90075ffc55a94de...@phx.gbl
 Content-Type: text/plain; charset=us-ascii
 
 Hi, my name is Daniel Alejandro, I'm a ecuadorian university student
and I
 need help.
 Many times I tried to install a very essentials plugins for me.
 I really need the SAGA MODULE INTERFACE, PROFILE, PROFILE FROM LINE,
but
 always when I try to install them, appears a error message THE PLUGIN
IS
 BROKEN. I dont know how fix the problem, and I really need the
plugins.
 Any help for try to fix this trouble is welcome.
 Tks a lot!
 Regards
 D.A.
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RE: [Qgis-user] Plugins broken!

[Alister Hood]

Hi Daniel,
If there isn't a pre-built package for OSX it should still be possible to build 
from source, but I can't really help with that.
If you want to try it yourself you might want to look at 
https://github.com/polymeris/qgis/wiki/How-to-install-the-SAGA-Python-Bindings, 
although it doesn't cover OSX.

Also, note that it is generally best to reply to the mailing list, not just to 
an individual.  I'm copying the list back in.


 -Original Message-
 From: Daniel Alejandro Pacheco [mailto:danny__al...@hotmail.com]
 Sent: Tuesday, 8 November 2011 5:21 p.m.
 To: Alister Hood
 Subject: Re: [Qgis-user] Plugins broken!
 
 Hi Alister, tks for your answer.
 I think that the problem is I work on Macintosh operating system! I looked
 everywhere, but I can't find how to install Saga Phyton bindings under
 Mac. I don´t know if it is possible. Maybe you know how to do it?
 Regards
 Daniel
 
 
 El 07/11/11 18:00, Alister Hood alister.h...@synergine.com escribió:
 
 Hi Daniel,
 What operating system are you using?  Windows?
 1. This conversation should help with the profile plugins:
 http://osgeo-org.1803224.n2.nabble.com/Profile-Tool-td6745484.html
 
 2. On Windows QGIS is still built with Python 2.5, but the latest
 versions of the Saga python bindings are for Python 2.6 or 2.7
 You may have success using a slightly old version:
 http://sourceforge.net/projects/saga-gis/files/SAGA%20-%202.0/SAGA%202.0
 .5/saga_2.0.5_bin_mswvc9.zip/download and
 http://sourceforge.net/projects/saga-gis/files/SAGA%20-%202.0/SAGA%202.0
 .5/saga_2.0.5_python25_mswvc.zip/download
 To install the python bindings, open the zip, go into the subfolder
 Python25\Lib\site-packages\, and extract its contents to
 C:\osgeo4w\apps\Python25\Lib\site-packages (or similar).
 I was able to run `import saga_api` at a Python prompt, so it seems the
 Python bindings were working, but when I tried to turn the processing
 framework panel on in QGIS I got some error about something not being a
 grid.  I lost interest at about this point - not sure if the problem is
 with the QGIS saga plugin or what.  Note that I only tried with QGIS
 trunk.
 
 Alister
 
  Date: Mon, 7 Nov 2011 14:30:18 -0500
  From: Daniel Alejandro Pacheco danny__al...@hotmail.com
  Subject: [Qgis-user] Plugins broken!
  To: qgis-user@lists.osgeo.org
  Message-ID: blu0-smtp151be4726f90075ffc55a94de...@phx.gbl
  Content-Type: text/plain; charset=us-ascii
 
  Hi, my name is Daniel Alejandro, I'm a ecuadorian university student
 and I
  need help.
  Many times I tried to install a very essentials plugins for me.
  I really need the SAGA MODULE INTERFACE, PROFILE, PROFILE FROM LINE,
 but
  always when I try to install them, appears a error message THE PLUGIN
 IS
  BROKEN. I dont know how fix the problem, and I really need the
 plugins.
  Any help for try to fix this trouble is welcome.
  Tks a lot!
  Regards
  D.A.
 
 

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RE: [Qgis-user] Rule based labeling ideas

[Alister Hood]

Oops, that reply didn't go to the developer list
Sorry for the double-up, user list.

 -Original Message-
 From: Alister Hood
 Sent: Friday, 4 November 2011 11:32 a.m.
 To: 'qgis-user@lists.osgeo.org'
 Cc: 'madman...@gmail.com'
 Subject: RE: [Qgis-user] Rule based labeling ideas
 
 Hi Nathan,
 I suggested a similar thing as part of http://hub.qgis.org/issues/4123
- have
 you seen that ticket?
 I haven't got around to splitting it up like Martin suggested :(
 I think the way I suggested dealing with labels would be simpler for
the user.
 
 Also, at least for your second option (ui in the labelling tab), it
seems
 like you have only considered that users want to apply different text
to labels
 for different rules.  I think it is very common for users to want to
apply
 different formatting to the labels, e.g. larger text for highways or
large
 cities than for side streets or small towns.
 
 Alister
 
 
  Date: Thu, 3 Nov 2011 23:25:14 +1000
  From: Nathan Woodrow madman...@gmail.com
  Subject: [Qgis-user] Rule based labeling ideas
  To: qgis-develo...@lists.osgeo.org, qgis-user
  qgis-user@lists.osgeo.org
  Message-ID:
 
CAAi8Yg8j6JuGPxbEQeTnkto6Wp55A=xla-e0ogmss301k5c...@mail.gmail.com
  Content-Type: text/plain; charset=iso-8859-1
 
  Hi all,
 
  I was playing around with some uDig, SLD and MapServer today and how
they
  handle labeling features and I noticed that they do labels per class
(per
  symbol in our case) and I remember seeing that rule based labeling
was on
  the To-Talk-About list for the next hackfest and thought I would
throw a
  few ideas about how I thought we could do it.
 
  I have written a few details about my ideas here
  http://www.qgis.org/wiki/RuleBasedLabelingIdeas
 
  Would love to hear other peoples thoughts on this.
 
  My motivation for thinking this would be good is that it's a pretty
  powerful feature in SLD and MapServer but all the UIs that I have
seen to
  handle defining the labels per feature class/symbol are very below
par IMO.
 
  - Nathan
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Re: [Qgis-user] How to Degitize a raster immage

[Alister Hood]

And if you are thinking of manually tracing over a raster image you just
need the tools on the digitisation and advanced digitisation
toolbars.  There is help on these in the user manual.

 Date: Wed, 2 Nov 2011 16:52:49 -0700
 From: Mars marsofea...@gmail.com
 Subject: Re: [Qgis-user] How to Degitize a raster immage
 To: Mumtaz Lakho lakho.mum...@yahoo.com
 Cc: QGIS-Users qgis-user@lists.osgeo.org
 Message-ID: 9293d6af-3204-49f6-bf99-b7d2d7889...@gmail.com
 Content-Type: text/plain; charset=us-ascii
 
 Besides Geo-Referencing a Raster image, there is also a function
called
 Feature Extraction. I Believe there is a plugin for extracting
Vector
 Features from a DEM and possibly other functions to extract features
from other
 types of Rasters. Perhaps if Geo-referencing is not your primary goal
you can
 research feature extraction to give you some background.
 
 Sent from my iPhone
 
 On 2011-11-02, at 12:57 PM, Mumtaz Lakho lakho.mum...@yahoo.com
wrote:
 
  Dear QGIS Repr.
  Would u please guide me the process of Digitizationof raster layer
under
 QGIS 1.7.1- wroclaw
  thanks
  (Mumtaz)
  a QGIS User
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RE: [Qgis-user] Modifier Key to activate Mouse Panning/Zooming of Map Canvas

[Alister Hood]

Hi Mars,
Could you be slightly more specific about what you want the modifier key
to do?  Do you want it to pan if you hold down a key while clicking and
dragging, regardless of what tool is selected, and to zoom if you hold
down another key?
Do you realise that you can pan by dragging with the middle mouse
button, regardless of what tool is selected?  And zoom by scrolling the
mouse wheel?

Alister

 Date: Sun, 30 Oct 2011 20:28:10 -0700
 From: Mars Sjoden marsofea...@gmail.com
 Subject: [Qgis-user] Modifier Key to activate Mouse Panning/Zooming of
   Map Canvas
 To: qgis-user@lists.osgeo.org
 Message-ID:

CAEKb5O=koe_qr-qp+t5rrxvvamarp9qpslbmr4fwnj_eu3r...@mail.gmail.com
 Content-Type: text/plain; charset=iso-8859-1
 
 Hi,
 
 Just wondering if there is a Modifier Key to activate Mouse
Panning/Zooming
 of the Map Canvas while using another tool so as to not need to switch
back
 and forth between tools.
 
 Thanks!
 
 mars
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[Qgis-user] Avoiding Label Clustering and custom placement

[Alister Hood]

Hi,

 Date: Tue, 25 Oct 2011 00:13:25 +0100
 From: Gerhardus Geldenhuis gerhardus.geldenh...@gmail.com
 Subject: [Qgis-user] Avoiding Label Clustering and custom placement
 To: qgis-user@lists.osgeo.org
 Message-ID:

caatm_0rvmbzp0no72v4ytuwzjco-ctije163sqjd-th8d5u...@mail.gmail.com
 Content-Type: text/plain; charset=iso-8859-1
 
 Hi
 I wanted to initially ask how do I avoid labels being on top of one
another
 if data points are very close to one another. I then had a look at

http://www.youtube.com/watch?v=sXK_0eEH3hcfeature=BFalist=HL1319492137
lf=mh_
 lolzwhich
 does to an extent have the answer I was looking for. It appears that
 there is not automatic way and that I have to manually do label
placement.

If you use the new labelling engine (the buttons on the toolbar) the
labels should automatically be positioned so that they do not overlap.
You should not need to use data-defined label placement to achieve this.
Perhaps you were previously using the old labelling engine which is
available as a tab in the layer properties?  The old labelling engine
does not avoid label collisions.

 However here is my problem, I have imported a set of points from a CSV
file
 using the Add Delimited Text layer plugin. Firstly I could not add
any
 custom columns that I could use to set my label x and y co-ordinates
again.
 So then I realized/thought that QGIS would probably not be writing
back to
 my CSV file, so it wont add additional columns. I then added my own
columns
 and set the values to 0 but when I set that my data defined positions
it
 does not work, my labels disappear. I have initialized the values to
be zero
 so perhaps that is the mistake... or perhaps qgis still can't or wont
write
 back to the CSV file.

QGIS opens CSV files read-only (well, there is a way to open them so
that you can add new entries, but not edit existing ones).

 So a number of questions:
 Is the CSV file only imported once or is it dynamic so will it thus
grow,
 shrink everytime there is a change to the file and I reload my
project?
 How can I add custom writeable attributes to a CSV imported layer, if
at
 all? Or do I need to import the CSV file and convert it to an QGIS
type
 format?
 Am I approaching this the correct way or is there an easier way to
customize
 my label setting so that I don't have labels overprinting.
 
 Regards
 
 --
 Gerhardus Geldenhuis

Alister
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[Qgis-user] RE: Qgis-user Digest, Vol 68, Issue 41

[Alister Hood]

Hi Paul,
It should be built in to QGIS.  Try looking in the plugin manager
instead of the plugin installer.

Alister

 Date: Wed, 19 Oct 2011 21:26:08 +0100
 From: paul caruana galizia paul...@gmail.com
 Subject: [Qgis-user] Missing Georeferencer Plugin QGIS 1.7.0-Wroclaw
 To: qgis-user@lists.osgeo.org
 Message-ID:

CAEns__chsn_m8q=c7i11laftal_uzxzpw9gtlldg-rxymjj...@mail.gmail.com
 Content-Type: text/plain; charset=iso-8859-1
 
 Hello,
 
 I've just installed QGIS 1.7.0-Wroclaw on my Mac (OS X 10.5.8). I've
found
 and downloaded a number of plugins, but the Georeferencer plugin
doesn't
 appear in the list of available plugins.
 
 Where can I find the Georeferencer plugin and how do I install it?
 
 Thanks very much for your help.
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