Re: [Qgis-user] attribute actions oddities in 1.3.0?

2009-11-21 Thread Richard Duivenvoorde

JD Comtois wrote:
Thanks for any insight on what I might be doing wrong, or for letting me 
know that it is the software and not me (so i can stop banging my head 
against the keyboard ;-)


Hi JD,

I cannot help you, but the safest bet I think is to file a ticket (with 
a good description like in your mail) in trac 
(https://trac.osgeo.org/qgis/), make some example data for this issues, 
and make it available via trac also.


This makes it easier for developers to reproduce your issue and dive 
into it.


Though it is possible that your description already rings a bell with 
one of the developers...?


Regards,

Richard
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[Qgis-user] attribute actions oddities in 1.3.0?

2009-11-21 Thread JD Comtois
Hello

I am using Mimas 1.3.0 (do not have the build version handy) on windows
installed using the stand alone installer, installed on laptop with Windows
XP pro operating system.

I am having a strange problem with the attribute action feature.  I want to
be able to play videos or view pictures associated with various points in my
layer.  I have input the path to vlc on my machine (in quotes) and then the
path to the file (in quotes) using the %% argument to get the value in the
attribute:  "C:\program files\videolan\vlc\vlc.exe" "c:\pics_n_vids\%%" is
the action.

In my specific situation, I have 3 video attributes and 3 picture attributes
(the value of each being the name of a video or picture file).  So, I should
be able to simply right click on one of those values from the Identify
Results window and choose the action that I have called View.

This worked perfectly fine in 1.0.1 (or was it 1.0.2??? - it is already
replace so i cannot check but either way, it was working fine) KORE.  But in
1.3.0 Mimas, something strange happens.  The value that is sent to the VLC
video player is not necessarily the value that I selected from the Identify
Results window.  The attribute values are correctly associated with the
attribute name in the Identify Results window (i.e. video1 is shown to
contain the correct filename, etc.) but the value that gets sent to the
player can be the value from any of the other attributes listed in the
Identify Results window.

So I might have to select the value associated with video1 so as to see
picture 2, or select the value displayed for picture3 so as to be able to
play video1, for example.  I am working from layers stored in PostGIS.

I have tried to find any related issue on the forums but have not seen this
situation discussed.

Thanks for any insight on what I might be doing wrong, or for letting me
know that it is the software and not me (so i can stop banging my head
against the keyboard ;-)

jd
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Re: [Qgis-user] Ecological toolbox for QGIS - collecting ideas

2009-11-21 Thread John C. Tull
On Nov 21, 2009, at 5:12 PM, Alex Mandel wrote:

> Anne Ghisla wrote:
>> Hi all, and sorry for cross-posting,
>> 
>> during QGIS hackfest the idea of an ecological toolbox has popped up,
>> thanks mainly to Johannes Signer.
>> Among currently available standalone bundles, we thought about Hawth's
>> tools [0] and some other Arc* plugins; other tools, like Conefar [1]
>> and Circuitscape [2], are dedicated GIS clones and could not cover all
>> analysis requirements, therefore obliging the user to switch among
>> different programs.
>> We'd like to ask ecology researchers, teachers and students what are
>> the most common analyses you run, and if you'd like to have the
>> related tools available for QGIS in a toolbox just like for example
>> GRASS toolbox.
>> 
>> Thanks for feedback, and feel free to forward the message to relevant
>> people and mailing lists!
>> Anne Ghisla
>> 
>> [0] http://www.spatialecology.com/htools/tooldesc.php
>> [1] http://www.conefor.org/
>> [2] http://www.circuitscape.org/Circuitscape/Welcome.html
> 
> For those who have access to Academic Journals, there might be some good
> background reading in
> http://dx.doi.org/10.1016/j.ecoinf.2009.07.004
> Steiniger 2009 Free and open source geographic information tools for
> landscape ecology. Ecological Informatics

I found it freely available via scholar.google.com at
http://www.geo.unizh.ch/publications/sstein/sstein_freegitools_ecoinf2009.pdf

Regards,
John
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Re: [Qgis-user] Ecological toolbox for QGIS - collecting ideas

2009-11-21 Thread Alex Mandel
Anne Ghisla wrote:
> Hi all, and sorry for cross-posting,
> 
> during QGIS hackfest the idea of an ecological toolbox has popped up,
> thanks mainly to Johannes Signer.
> Among currently available standalone bundles, we thought about Hawth's
> tools [0] and some other Arc* plugins; other tools, like Conefar [1]
> and Circuitscape [2], are dedicated GIS clones and could not cover all
> analysis requirements, therefore obliging the user to switch among
> different programs.
> We'd like to ask ecology researchers, teachers and students what are
> the most common analyses you run, and if you'd like to have the
> related tools available for QGIS in a toolbox just like for example
> GRASS toolbox.
> 
> Thanks for feedback, and feel free to forward the message to relevant
> people and mailing lists!
> Anne Ghisla
> 
> [0] http://www.spatialecology.com/htools/tooldesc.php
> [1] http://www.conefor.org/
> [2] http://www.circuitscape.org/Circuitscape/Welcome.html

For those who have access to Academic Journals, there might be some good
background reading in
http://dx.doi.org/10.1016/j.ecoinf.2009.07.004
Steiniger 2009 Free and open source geographic information tools for
landscape ecology. Ecological Informatics

There are some references to other articles that catalog Landscape
Ecological GIS tools that researchers use (whether or not they exist in
the software)

Anyone have time to read through and make a list of tools?

Alex
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[Qgis-user] Re: Attribute precision AND view selection only

2009-11-21 Thread mtnbiketrail
I have a point shapefile that has latitude and longitude in decimal 
degrees as attributes. Out of the 1000 points, I only  want to display 
certain points by using filtering. While I can select the filter, the 
display doesn't change. that is, it still shows all 1000 points. The 
attribute table shows only my filter, and I checked the "show selection 
only" box.


So I did the next best thing and saved the selection as a shapefile, and 
loaded that new shapefile. However, the decimal degrees gets "rounded 
off" to an integer. I can see in the original attribute table there is a 
precision of 0 set for the latitude and longitude column, but I don't 
know how to change that to a precision of 00 to get my full latitude 
and longitude to show in the new shapefile.


QGIS 1.3 on Windows XP
novice user
thanks,
Tom
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[Qgis-user] HomeRange_plugin 2.1.2: bugfix for Windows and moved to user contributed repository

2009-11-21 Thread Anne Ghisla
Hi all, and sorry for cross-posting,

with the present mail I announce a small bugfix related to Windows, and
that I moved the plugin from Faunalia repository to the PyQGIS user
contributed repository; I thank Paolo Cavallini who provided plugin's
hosting since today. 

All the best,
Anne 


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Re: [Qgis-user] qgis as a data catalog browser and viewer

2009-11-21 Thread maning sambale
+1

Hopefully with close interaction with qgis as already mentioned.

Can't wait to use it.

On Sat, Nov 21, 2009 at 8:43 PM, Agustin Lobo  wrote:
> I think this is a good option: not a qgis plugin but a separate application.
> It's not just a matter of geting names and geographic positions, metadata
> makes the catalog a complex tool.
> Looking forward to it (and to see it fulfilling INSPIRE directives, so that
> remote catalogues can be searched and browsed)
> Are planing to include a metadata editor?
>
> Agus
>
> Gary Sherman wrote:
>>
>> On Thu, Nov 19, 2009 at 10:49 PM, Ivan Mincik 
>> wrote:

 I've been working on a project that will ultimately provide the things
 you describe. I will be ready
 to unveil it soon and will be looking for PyQGIS devs to help...

 -gary
>>>
>>> Hi Gary,
>>> can You give us little bit more info ?
>>>
>>> Thanks,
>>> Ivan
>>
>> The data browser (code named GeoNibble at present) currently has the
>> following features:
>> * Browse directory tree
>> * Preview supported raster and vector layers
>> * Zoom and pan preview images
>> * View metadata for raster and vector layers
>> * Drag and drop support, including drop on QGIS
>>
>> A screenshot can be seen here: http://picasaweb.google.com/shermange/GNDB
>>
>> The browser is written in Python (PyQt) and requires the bindings for
>> QGIS and GDAL/OGR. It is in early stages of development but functions
>> pretty well as a data browser/preview/launcher.
>>
>> -gary
>>
>>
>
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-- 
cheers,
maning
--
"Freedom is still the most radical idea of all" -N.Branden
wiki: http://esambale.wikispaces.com/
blog: http://epsg4253.wordpress.com/
--
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Re: [Qgis-user] qgis as a data catalog browser and viewer

2009-11-21 Thread Agustin Lobo

I think this is a good option: not a qgis plugin but a separate application.
It's not just a matter of geting names and geographic positions, metadata
makes the catalog a complex tool.
Looking forward to it (and to see it fulfilling INSPIRE directives, so that
remote catalogues can be searched and browsed)
Are planing to include a metadata editor?

Agus

Gary Sherman wrote:

On Thu, Nov 19, 2009 at 10:49 PM, Ivan Mincik  wrote:

I've been working on a project that will ultimately provide the things
you describe. I will be ready
to unveil it soon and will be looking for PyQGIS devs to help...

-gary

Hi Gary,
can You give us little bit more info ?

Thanks,
Ivan


The data browser (code named GeoNibble at present) currently has the
following features:
* Browse directory tree
* Preview supported raster and vector layers
* Zoom and pan preview images
* View metadata for raster and vector layers
* Drag and drop support, including drop on QGIS

A screenshot can be seen here: http://picasaweb.google.com/shermange/GNDB

The browser is written in Python (PyQt) and requires the bindings for
QGIS and GDAL/OGR. It is in early stages of development but functions
pretty well as a data browser/preview/launcher.

-gary




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[Qgis-user] calculating distances between points

2009-11-21 Thread Nik Go
I have two CSV files which I've converted to VRTs containing points on the
map. Maps are projected in UTM.

How can I determine the distances of points in File #1 from points in File
#2? By distance, I mean distance like as-the-crow flies.  Is it possible to
generate these values and add a column for them in the DBF table or some
other file?

I'm hoping to visualize answers to questions like: how often do events
plotted in File #2 occurs in relation to the distance from points in File#1.
Am sorry if I can't express myself in GIS terms.

Thank you and regards,

NIk
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Re: [Qgis-user] calculating area

2009-11-21 Thread Nik Go
Thank you all for the tips. I've actually managed to do the same when
I changed the CRS to the appropriate UTM.


On 11/21/09, John C. Tull  wrote:
> Hi Nik,
>
> On Nov 20, 2009, at 12:04 AM, Nik Go wrote:
>
>>
>> Hello. I'm trying to calculate area of my shapefiles but I'm not really
>> sure if I'm doing it right.  I expect results to be in meters (sq meters
>> or sq. kilometers) but read out is in sq. degrees.  I'm told that I have
>> shapefiles in geographic coordinate system WGS 84 but I don't know to
>> convert this to a projected coordinate system from qgis.
>>
>> So, how should I go about doing
>> converting from geographic coordinated to projected coordinates so I could
>> determine/calculate area
>> determine distance between points
>> convert sq. degrees to sq. meters?
>
> You can change your project CRS from the default geographic coordinate
> system of WGS84 to a projected coordinate system based on meters, such as a
> UTM zone. Turn on the "Enable 'on the fly' CRS transformation, and you will
> be set for vector data. If you have raster data, Qgis does not handle on the
> fly transforms on them. For those, I recommend looking at gdalwarp, part of
> the gdal tools. In particular, look at the vrt output format so you do not
> create numerous large file. A vrt invokes gdal to, effectively, perform an
> 'on the fly' reprojection of the original raster data.
>
> Regards,
> John
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