[Qgis-user] Symbol size in legend

[Matt Boyd via QGIS-User]

I'm using some rules for symbols on a map and I'm having trouble getting
the symbol size in the legend to change. I've tried all the buttons I can
find in the Legend item properties that have something to do with size and
the legend icon just stays the same size.
The icons / symbols are svg format. Has anyone hit this before and is there
a fix or something I'm missing? Currently on QGIS 3.32
[image: image.png]

Thanks
Matt
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Re: [Qgis-user] mdal / mesh simple formats

[Matt Boyd via Qgis-user]

Hi Peter,
woohoo, awesome, okay now I get it and it works.
I thought that as the 2dm file had duplicates of the cells & nodes in
the simple mesh I was looking at that it wasn't needed. Also the xdmf
loads directly into paraview so I thought that QGIS would do the same
thing.
All I need to do is generate a 2dm file with nodes and cells like the
examples and my meshes *should work, easy.

Thanks again, I'll post this back to QGIS users in case anyone else
hits the same issue.
Matt

On Fri, Sep 2, 2022 at 5:58 PM Peter Petrik
 wrote:
>
> Hi,
>
> 1)
> on linux/docker, try to set
> export LD_LIBRARY_PATH=
> ./mdalinfo ...
>
> 2) XDMF is a dataset with values ONLY. So in that menu you need to load 2dm 
> file == definition of your mesh frame, and once loaded, you right-click on 
> the mesh layer and "add values/datasets" in the properties (XMDF) file. Some 
> files (e.g. netcdf) has it in one file all, but this one is different.  Best 
> to check some online tutorials.
>
> Kind Regards,
> Peter Petrík
> CPO of Mergin Maps
> LI, Mergin Maps
>
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Re: [Qgis-user] mdal / mesh simple formats

[Matt Boyd via Qgis-user]

Thanks Peter,
my data already looks very similar to the xdmf sample, my plan was to
just replicate this format or something not very different.

github  lutraconsulting...   MDAL\tests\data\xdmf\simple

However, I can't get QGIS to load simpleXFMD.xmf or simpleXFMD.h5. The
xmf isn't recognised and the h5 just comes in as a single line of
squares.
I was hoping this format was supported as they are in the MDAL repo.
Are the xmf/h5 supported or are they in there as an example of what is
converted to the supported 2dm format?

Thanks again, any light you could shed would be appreciated.

Matt



On Mon, Aug 29, 2022 at 9:01 PM Peter Petrik
 wrote:
>
> Hi Matt,
>
> MDAL basically supports a bunch of data formats that are mostly defined by 
> the suppliers of the results. It comes with the fileformat (e.g. ASCII or 
> netCDF, ...) + data spec (which arrays are defined/expected with which 
> properties). So either you need to replicate one of the supported formats or
> alternatively we can write a data reader for your format in MDAL.
>
> Kind Regards,
> Peter Petrík
> CPO of Mergin Maps
> LI, Mergin Maps
>
>
>
>
>
> On Sat, Aug 27, 2022 at 3:02 AM Matt Boyd via Qgis-user 
>  wrote:
>>
>> Thanks Richard,
>> that looks interesting. I can now get regular grid / square mesh to
>> display correctly but I'm working with tri-mesh and anything I try to
>> load using that ends up like this..Just a line of squares.
>> There's something obvious I'm missing in the format here.
>>
>> On Fri, Aug 26, 2022 at 4:56 PM Richard Duivenvoorde
>>  wrote:
>> >
>> > Hi Matt,
>> >
>> > I'm not a Mesh expert either, but I use (and create) netcdf using python 
>> > using the
>> > https://github.com/Unidata/netcdf4-python module
>> >
>> > Netcdf is pretty good supported in QGIS in my experience
>> >
>> > Our data has also a time dimension so we use the CF convention [0] and 
>> > fiddling around with the so called UGRID convention [1] But maybe that is 
>> > both too much for a simple tin...
>> >
>> > I Googled:
>> > https://stackoverflow.com/questions/48864357/convert-hdf5-to-netcdf4-in-bash-r-python-or-ncl
>> > as being able to convert hdf5 to netcdf... didn't/couldn't try/test 
>> > though..
>> >
>> > Regards,
>> >
>> > Richard Duivenvoorde
>> >
>> > [0] https://en.wikipedia.org/wiki/Climate_and_Forecast_Metadata_Conventions
>> > [1] http://ugrid-conventions.github.io/ugrid-conventions/#data-variables
>> >
>> > On 8/26/22 03:32, Matt Boyd via Qgis-user wrote:
>> > > Thanks, thats pretty helpful.
>> > > I'm running QGIS 3.26.2-Buenos Aires installed from osgeo.
>> > > under the xdmf directory there the xmf/hdf files look pretty similar
>> > > to what I'm using but they won't load. there's a partial duplicate of
>> > > the data in the hdf file in that directory as a 2dm file which does
>> > > work.
>> > > I'm still not sure if I'm supposed to be able to load the xmf/hdf
>> > > files directly using mdal? I can easily drop out my hdf5 data to the
>> > > 2dm format is this the proposed way to do it?
>> > >
>> > > Thanks again
>> > > Matt
>> > >
>> > > On Fri, Aug 26, 2022 at 4:09 AM Delaz J via Qgis-user
>> > >  wrote:
>> > >>
>> > >> Hi Matt,
>> > >>
>> > >> The mdal repo has a number of mesh data
>> > >> (https://github.com/lutraconsulting/MDAL/tree/master/tests/data) but
>> > >> whether these are simple meshes/formats or not is beyond my
>> > >> understanding of this data type.
>> > >>
>> > >> Hope that helps,
>> > >>
>> > >> Harrissou
>> > >>
>> > >> Le 25/08/2022 à 09:41, Matt Boyd via Qgis-user a écrit :
>> > >>
>> > >>> Hi QGIS people,
>> > >>> I asked something like this a couple of years ago, managed to find
>> > >>> some workarounds and now that I know a little more about what I'm
>> > >>> doing I could use a bit of help.
>> > >>> I've got some simple tin meshes that I'd like to drop into QGIS, they
>> > >>> get generated in a python modelling software I'm using.
>> > >>> The data all sits in a single hdf5 file, points with coordinates,

Re: [Qgis-user] mdal / mesh simple formats

[Matt Boyd via Qgis-user]

Thanks Richard,
that looks interesting. I can now get regular grid / square mesh to
display correctly but I'm working with tri-mesh and anything I try to
load using that ends up like this..Just a line of squares.
There's something obvious I'm missing in the format here.

On Fri, Aug 26, 2022 at 4:56 PM Richard Duivenvoorde
 wrote:
>
> Hi Matt,
>
> I'm not a Mesh expert either, but I use (and create) netcdf using python 
> using the
> https://github.com/Unidata/netcdf4-python module
>
> Netcdf is pretty good supported in QGIS in my experience
>
> Our data has also a time dimension so we use the CF convention [0] and 
> fiddling around with the so called UGRID convention [1] But maybe that is 
> both too much for a simple tin...
>
> I Googled:
> https://stackoverflow.com/questions/48864357/convert-hdf5-to-netcdf4-in-bash-r-python-or-ncl
> as being able to convert hdf5 to netcdf... didn't/couldn't try/test though..
>
> Regards,
>
> Richard Duivenvoorde
>
> [0] https://en.wikipedia.org/wiki/Climate_and_Forecast_Metadata_Conventions
> [1] http://ugrid-conventions.github.io/ugrid-conventions/#data-variables
>
> On 8/26/22 03:32, Matt Boyd via Qgis-user wrote:
> > Thanks, thats pretty helpful.
> > I'm running QGIS 3.26.2-Buenos Aires installed from osgeo.
> > under the xdmf directory there the xmf/hdf files look pretty similar
> > to what I'm using but they won't load. there's a partial duplicate of
> > the data in the hdf file in that directory as a 2dm file which does
> > work.
> > I'm still not sure if I'm supposed to be able to load the xmf/hdf
> > files directly using mdal? I can easily drop out my hdf5 data to the
> > 2dm format is this the proposed way to do it?
> >
> > Thanks again
> > Matt
> >
> > On Fri, Aug 26, 2022 at 4:09 AM Delaz J via Qgis-user
> >  wrote:
> >>
> >> Hi Matt,
> >>
> >> The mdal repo has a number of mesh data
> >> (https://github.com/lutraconsulting/MDAL/tree/master/tests/data) but
> >> whether these are simple meshes/formats or not is beyond my
> >> understanding of this data type.
> >>
> >> Hope that helps,
> >>
> >> Harrissou
> >>
> >> Le 25/08/2022 à 09:41, Matt Boyd via Qgis-user a écrit :
> >>
> >>> Hi QGIS people,
> >>> I asked something like this a couple of years ago, managed to find
> >>> some workarounds and now that I know a little more about what I'm
> >>> doing I could use a bit of help.
> >>> I've got some simple tin meshes that I'd like to drop into QGIS, they
> >>> get generated in a python modelling software I'm using.
> >>> The data all sits in a single hdf5 file, points with coordinates, the
> >>> cells which are just the indexes of 3 points, plus attributes for each
> >>> point. About the simplest mesh setup I can imagine.
> >>> I'm trying to find the simplest format that mdal supports with an
> >>> example dataset so I can make something similar. (ideally hdf5 so I
> >>> don't need to work out how to use anything new in python).
> >>>
> >>> Any tips?
> >>> Thanks
> >>> Matt
> >>> ___
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> >>> Qgis-user@lists.osgeo.org
> >>> List info: https://lists.osgeo.org/mailman/listinfo/qgis-user
> >>> Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-user
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Re: [Qgis-user] mdal / mesh simple formats

[Matt Boyd via Qgis-user]

Thanks, thats pretty helpful.
I'm running QGIS 3.26.2-Buenos Aires installed from osgeo.
under the xdmf directory there the xmf/hdf files look pretty similar
to what I'm using but they won't load. there's a partial duplicate of
the data in the hdf file in that directory as a 2dm file which does
work.
I'm still not sure if I'm supposed to be able to load the xmf/hdf
files directly using mdal? I can easily drop out my hdf5 data to the
2dm format is this the proposed way to do it?

Thanks again
Matt

On Fri, Aug 26, 2022 at 4:09 AM Delaz J via Qgis-user
 wrote:
>
> Hi Matt,
>
> The mdal repo has a number of mesh data
> (https://github.com/lutraconsulting/MDAL/tree/master/tests/data) but
> whether these are simple meshes/formats or not is beyond my
> understanding of this data type.
>
> Hope that helps,
>
> Harrissou
>
> Le 25/08/2022 à 09:41, Matt Boyd via Qgis-user a écrit :
>
> > Hi QGIS people,
> > I asked something like this a couple of years ago, managed to find
> > some workarounds and now that I know a little more about what I'm
> > doing I could use a bit of help.
> > I've got some simple tin meshes that I'd like to drop into QGIS, they
> > get generated in a python modelling software I'm using.
> > The data all sits in a single hdf5 file, points with coordinates, the
> > cells which are just the indexes of 3 points, plus attributes for each
> > point. About the simplest mesh setup I can imagine.
> > I'm trying to find the simplest format that mdal supports with an
> > example dataset so I can make something similar. (ideally hdf5 so I
> > don't need to work out how to use anything new in python).
> >
> > Any tips?
> > Thanks
> > Matt
> > ___
> > Qgis-user mailing list
> > Qgis-user@lists.osgeo.org
> > List info: https://lists.osgeo.org/mailman/listinfo/qgis-user
> > Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-user
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[Qgis-user] mdal / mesh simple formats

[Matt Boyd via Qgis-user]

Hi QGIS people,
I asked something like this a couple of years ago, managed to find
some workarounds and now that I know a little more about what I'm
doing I could use a bit of help.
I've got some simple tin meshes that I'd like to drop into QGIS, they
get generated in a python modelling software I'm using.
The data all sits in a single hdf5 file, points with coordinates, the
cells which are just the indexes of 3 points, plus attributes for each
point. About the simplest mesh setup I can imagine.
I'm trying to find the simplest format that mdal supports with an
example dataset so I can make something similar. (ideally hdf5 so I
don't need to work out how to use anything new in python).

Any tips?
Thanks
Matt
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Re: [Qgis-user] Angle of view

[Matt Boyd]

It sounds like you want to calculate the bearing or azimuth from the
camera position to each point on the raster. This would give you the
direction from the camera to the position, then rotate the result so
it aligns with the direction of the camera. You could probably just
create the basic plot once and then just rotate it to match the camera
direction each time.
I'd do it using a regular grid of points and the calculator, then
interpolate that onto a raster if thats what you want.
essentially arctan(dy/dx) with some rotation and conversion from
radians to degrees.

I've done something similar in python, but for flow direction between
nodes in a drainage network, might be overkill.

Good luck

On Fri, Jun 25, 2021 at 4:09 AM Surya Jarausch  wrote:
>
> Dear Qgis-Users,
>
> I am relatively new to Qgis and working on a project to georeference 
> webcam-images and then determine the areas covered with snow.
>
> To get an estimation of the quality of the projection, I would like to create 
> a raster with the values of the angle of view from a certain point – the 
> camera position. If the angle is near 90° the projection is likely to be 
> accurate, the more it becomes an pointed angle, the bigger possible errors 
> will get.
>
> I already created a viewshed to determine the visible areas of the DEM.
>
>
>
> I would be grateful if you could help me out,
>
> Surya.
>
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Re: [Qgis-user] Rename column

[Matt Boyd]

You can rename columns (or fields) in the layer properties (need to
have editting turned on)
In the field calculator, sometimes I have issues with the data type
and "fieldname" doesn't work so well but if I do "1*fieldname" it
does.



On Tue, Jun 1, 2021 at 7:31 PM Ursula Heinze  wrote:
>
> Hello,
>
> I have a little problem with the field calculator. I want to rename a column, 
> and I don´t find any way to do it.
>
> Now I tried to copy the field values in a new column with the right name, and 
> am also not successful. Has anybody an idea for me, how to solve the problem? 
> Many thanks in advance!
>
> Ursula Heinze
>
>
>
> Gesendet von Mail für Windows 10
>
>
>
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Re: [Qgis-user] Qgis low CPU and Memory load

[Matt Boyd]

I use multiproc / proc to speed things up in python instead of a for
loop, each step needs to be independent of the other steps for this to
work.
On an i7 with 4 cores I can process 8 layers at a time and hit 100% on
all of them. I haven't used this inside qgis yet but for the
relatively simple work I'm doing it works well.

Matt

On Sat, Apr 17, 2021 at 2:12 AM Wolfgang Meinolf
 wrote:
>
> Thanks for the excellent feedback and hints. First of all, my QGIS qork is 
> mainly with vector layers. Therefore unfortunately the OpenCL capabilities 
> don’t help. To my understanding this is mainly for accelerating heavy raster 
> calculations. Secondly and as already mentioned, my most urgent need is to 
> accelerate the execution of GRASS v.net.steiner and v.clean as part of my 
> toolbox processing scripts for a number of given route networks in separate 
> areas.
>
>
>
> However, on you feedback I searched a bit and found, that obviously  since 
> QGIS3 some parallelization seems to be supported. In the developers coockbook 
> here: 
> https://docs.qgis.org/testing/en/docs/pyqgis_developer_cookbook/tasks.html#task-from-a-processing-algorithm
>   I found some promising info including the link to here: 
> https://www.opengis.ch/2018/06/22/threads-in-pyqgis3/. I will spend some time 
> to modify my loop through my separate network areas to try, to start python 
> jobs from inside the loop, which are then collected at the end.
>
>
>
> Thanks again for your good ideas and have a good weekend
>
> Br
>
> Wolfgang
>
> -
>
>
>
> Hi,
>
>
>
> You can also activate the OpenCL option.  Some algorithms have been optimized 
> (I believe it’s still experimental).  If you have a compatible  OpenCL video 
> card, it will run these on the card.  If not, it can probably run on 
> compatible CPUs.
>
>
>
> https://www.itopen.it/opencl-acceleration-now-available-in-qgis/
>
>
>
> I find it’s worth testing equivalent algorithms from different sources in the 
> Processing plugin is worth the trouble.  Some Saga algorithm are faster.  
> Merging vector lines, for example, could take a long time using the QGIS 
> algorithm (talking hours) and was much faster (a few minutes) using the Saga 
> version of the tool.  I also found that some algorithms are much faster to 
> handle when the files are not open beforehand in the layer manager.  For 
> example, the Processing plugin can sometimes grab the needed files directly 
> on the hard drive rather than picking one that is already open in the layer 
> manager. Looking at the processor, memory and disk usage can also help 
> identify bottle necks in the hardware.
>
> Nicolas Cadieux
>
> https://gitlab.com/njacadieux
>
>
>
> Le 16 avr. 2021 à 03:34, Francesco Pelullo  a écrit :
>
> 
>
>
>
> Il ven 16 apr 2021, 02:56 Stewart Holt  ha scritto:
>
>  Parallelizing script execution is complex and I doubt that it is currently 
> done in QGIS.
>
>
>
> That's true.
>
>
>
> In Settings / Options / Rendering / there's a checkbox for render layers in 
> parallel using as many CPU cores you want, but It Is enabled by default so I 
> suppose that there are no others settings that could make QGIS more 
> aggressive in CPU usage.
>
>
>
> Regards
>
>
>
>
>
>
>
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Re: [Qgis-user] Selecting maximum values in drill holes

[Matt Boyd]

Hi Grant,
how are you selecting and how is your data stored?
If the drill hole values are in some sort of sql database then you could
ORDER BY "value" descending then SELECT DISTINCT drillhole to get a unique
value for each drillhole.
My SQL is rusty and this is pretty vague.

Matt

On Fri, Jun 26, 2020 at 12:19 PM Grant Boxer  wrote:

> I am trying to find out the best way to select the highest values in a
> set of drill holes as well as the bottom of hole values. The files
> contain drill hole id, depth from, depth to and assay values. If have
> tried the maximum function but I don't think I have the syntax correct.
> Anyone have any suggestions?
>
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[Qgis-user] Mesh calculation python modules

[Matt Boyd]

Hi QGISers,
I'm doing some work with some modelling using python that generates large
numbers of mesh surfaces. I'd like to be able to perform comparisons and
run calculations on the meshes. Does anyone know about modules that are
optimised and make this relatively simple. I'm visualising my outputs in
paraview but it seems pretty forgiving so far.

Thanks
Matt
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Re: [Qgis-user] sampling points from multipe rasters

[Matt Boyd]

Hi Tyler,
the point sampling tool plugin will allow you to select multiple rasters to
sample from and output to the same file. It also allows you to save the
results in a number of different formats (geopackage, csv and shapefile).
If you've got access to python in your version of R then geopandas can read
geopackage files directly, I find that a lot more useful than csv.

I use this workflow. The slowest part is the point sampling depending on
the number and size of rasters and points.

Matt



On Tue, May 5, 2020 at 6:49 AM Tyler Smith  wrote:

> Hi,
>
> I have 30 raster layers, and I need to sample 10,000 random points
> from each layer (using the same set of points each time). I think
> my options are:
>
> 1. Create a virtual raster, and sample. This has the downside that
> the identify of the 30 layers will be replaced by generic 'band1',
> 'band2' labels.
>
> 2. Sample the layers directly, using a batch process. This has the
> downside that it appears to output to gpkg format, and creates 30
> separate files. I will need to open each of these files, export
> the points they contain to csv, and then combine the into a single
> table in R for analysis.
>
> Is there a way to create a virtual raster that retains the layer
> names in the stack? Alternatively, can I bulk sample multiple
> rasters and have the output combined in a single table?
>
> Thanks,
>
> Tyler
>
> --
> Tyler Smith
> plantarum.ca
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Re: [Qgis-user] Relations table

[Matt Boyd]

Thanks,
I ended up creating a virtual layer which enabled me to join the columns I
needed using standard SQL terms (inner join was the one I wanted).
Matt

On Wed, Mar 4, 2020 at 6:21 PM  wrote:

>
> Hi Matt,
>
> You have to have a common column in both tables (QGIS table and
> spreadsheet). The cells in both columns of the tables must contain
> exactly the same values.
> Then, open the layer in QGIS, go to properties and choose Connections.
> Then go to (+) symbol and follow the instructions.
>
> Nikos
>
>
> Παραθέτοντας από Matt Boyd :
>
> > Hi QGISers,
> > I'm trying to work out how to link up a table of data with no spatial
> > information to a gis layer with locations.
> > Each location has more than one property, the property is in an excel
> > spreadsheet.
> > I want to use the location data from the GIS layer and the properties
> from
> > the table to classify the points. Both of these datasets are maintained
> > separately and I need to be able to bring them back together for
> analysis.
> >
> > I'm having trouble getting all of the results for a point in the table to
> > link to the location.
> >
> > Any tips on this?
> > Thanks
>
>
>
> --
> Δρ. Νίκος Λαμπρινός
> Καθηγητής της Διδασκαλίας της Γεωγραφίας
> Τμήμα Δημοτικής Εκπαίδευσης
> Α.Π.Θ. 54124 Θεσσαλονίκη
> Τηλ.: 2310 991201 / 991230
> Email: labri...@eled.auth.gr
> Web Page: http://users.auth.gr/labrinos/
>   http://www.digital-earth.edu.gr/
>   https://www.auth.gr/univUnits
>
> -
> Dr. Nikos Lambrinos
> Professor of Geography Teaching
> Director of the Sector of Science and New Technologies
> President of the Hellenic digital earth Centre of Excellence
> Faculty of Education
> School of Primary Education
> Dept. of Science and New Technologies
> Aristotle University of Thessaloniki
> GR-54124 Thessaloniki, Greece
> Tel: +30 2310 991201
> Email: labri...@eled.auth.gr
> Web Page: http://users.auth.gr/labrinos/
>   http://www.digital-earth.edu.gr/
>   https://www.auth.gr/en/univUnits
>
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[Qgis-user] Relations table

[Matt Boyd]

Hi QGISers,
I'm trying to work out how to link up a table of data with no spatial
information to a gis layer with locations.
Each location has more than one property, the property is in an excel
spreadsheet.
I want to use the location data from the GIS layer and the properties from
the table to classify the points. Both of these datasets are maintained
separately and I need to be able to bring them back together for analysis.

I'm having trouble getting all of the results for a point in the table to
link to the location.

Any tips on this?
Thanks
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Re: [Qgis-user] importing .h5 files in qgis

[Matt Boyd]

Hi Giacomo,
have a look at the mesh options and the Crayfish plugin
that lutraconsulting have put together.
my datasets use .h5 in some places and h5 is just used as a shortened form
of hdf5 which seems to be more of a container than something with set rules
about where and how coordinates and data values sit within it.
The variations in the way that data can be stored in hdf makes it difficult
to identify so it might be that the hdf file isn't that easy to read in
QGIS.

If you want to examine the internals of a hdf file to see what you are
looking at then theres a bit of software called HDFView.

Hope this helps a little.

Matt

On Mon, Dec 30, 2019 at 11:46 PM Giacomo Fontanelli <
giacomofontanell...@gmail.com> wrote:

> Dear users
>
> Do you know how to import .h5 files in QGIS 3.10?
>
> Thank you very much
>
> Giacomo
>
>
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Re: [Qgis-user] Exporting points in order

[Matt Boyd]

Thanks Nicolas,
yes, I started out doing a lot of the raster / point generation in numpy
but (so far) I've found that manipulating the data as points in QGIS is a
lot more efficient for my workflow using existing tools than trying to do
something similar with rasters and numpy. This is essentially
pre-processing work to set up a model.
I did a little more digging and thinking and I can order / sort the points
the way I need by using the mmqgis tool or the sort plugin.
Ascending / descending on X/Y  and there's an option to add some SQL to one
of the export command options that (if it allows ORDER BY) will enable me
to make a simple script to export all my datasets.
Thanks again for the tips all.

Matt



On Thu, Dec 19, 2019 at 10:54 PM Nicolas Cadieux <
nicolas.cadi...@archeotec.ca> wrote:

> Hi,
>
> If it’s a regularly spaced grid, I would dump this in a numpy array and
> read it as a raster. Some examples here
>
> https://pcjericks.github.io/py-gdalogr-cookbook/index.html
> Nicolas
>
> Le 19 déc. 2019 à 05:56, Matt Boyd  a écrit :
>
>
> 
> Hi QGISers,
> I need to export a point dataset of a regularly spaced grid in a
> particular order as a csv / text file. Its one of the demands of some
> python code that I use the points in, its not my code so I don't have any
> say in this.
> The points start in the bottom left and move left to right with the final
> point being the top right corner.
> Is there an easy way to do this in the export options? I have created a
> column that in the point data that I use to sort the data so it goes in
> the right order, but it's clunky.
>
> Thanks
> Matt
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[Qgis-user] Exporting points in order

[Matt Boyd]

Hi QGISers,
I need to export a point dataset of a regularly spaced grid in a particular
order as a csv / text file. Its one of the demands of some python code that
I use the points in, its not my code so I don't have any say in this.
The points start in the bottom left and move left to right with the final
point being the top right corner.
Is there an easy way to do this in the export options? I have created a
column that in the point data that I use to sort the data so it goes in
the right order, but it's clunky.

Thanks
Matt
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Re: [Qgis-user] Geology / formation database structure

[Matt Boyd]

Hi Hugo,
that looks very cool.
I've been looking into this for a while and the thing that seems to be
missing even in the expensive commercial software is the ability to define
(non-spatial) relationships between data points.
The articles I've found about this sort of thing via google all suggest
that it would be very useful and discuss  basic structures but I haven't
been able to find an implementation. Ideally I'd find something
implemented so compatibility was built in.

Using postgis is a great. I'm working on the relationships in access at the
moment just because it's easy to visualise and is installed on most of the
PC's I work with. Once I get the tables right I'll look at moving to
something better.

Matt


On Thu, Oct 24, 2019 at 10:45 PM Hugo Mercier 
wrote:

> Hi Matt,
>
> On 24/10/2019 01:55, Matt Boyd wrote:
> > Hi QGISers,
> > possibly a little OT but do any of the geologists on the list know of a
> > pre-built structure for formation tops in well data?
> >
> > I'm thinking a relational DB structure that is able to be filtered by
> > group / formation / member and provides more functionality than
> > spreadsheets and with a smaller footprint than the monolithic
> > geology databases that seem to be around.
> >
> > I've started building this myself but I'm more of a user than a designer.
> >
>
> I don't know if it fits your needs, but we are currently working on a
> plugin [1] that allows the visualization of boreholes. Data are stored
> in whatever formats QGIS is able to read (we mainly use postgis) and the
> "data model" aims at being generic enough to adapt to different use cases.
>
> It still lacks a finishing touch before it goes to the main QGIS plugin
> repository, but we will be working again on it for one of our customer
> before the end of the year.
>
> Fell free to have a look !
>
> [1] https://github.com/Oslandia/QGeoloGIS
>
> Hugo
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Re: [Qgis-user] Geology / formation database structure

[Matt Boyd]

Hi Stefan,
I had another look at midvatten it's not quite what I need.
I'm not sure this is how to explain it but I'll try. The way you describe
it treats stratigraphy as just another property at a layer. I need the
stratigraphic relationships, groups at top level, then formation, then
member in a stratigraphic database, which is then linked to the "base data"
properties you've described.

The idea is to force an internal consistency and enable me to check data
thats been entered.

Thanks
Matt



On Thu, Oct 24, 2019 at 8:32 PM Stefan Giese 
wrote:

> Hi Matt,
>
> did you have a look to the midvatten plugin (1), there you can create a
> project database for geology data from drilholes. I didn't use it so far,
> but I think it's worth have a look on.
>
> Normally the basic construct should be a one to many relation between base
> data and horizon data
>
> base data (position, name, ...)   1 - n horizons ( upper depth, lower
> depth, lithology, colour, fabric, texture, genesis, stratigraphy...)
>
> (1) https://github.com/jkall/qgis-midvatten-plugin/wiki
>
> Best regards
>
> Stefan
>
>
> Mit freundlichen Grüßen
> Stefan Giese
> Projektleiter/Consultant
> ***
> Where2B Konferenz 2019
> 12. Dezember 2019 in Bonnwhere2b-conference.com
> ***
> WhereGroup GmbH
> Schwimmbadstr. 2
> 79100 Freiburg
> Germany
>
> Fon: +49 (0)761 / 519 102 - 61
> Fax: +49 (0)761 / 519 102 - 11
> stefan.gi...@wheregroup.comwww.wheregroup.com
> Geschäftsführer:
> Olaf Knopp, Peter Stamm
> Amtsgericht Bonn, HRB 9885
>
> Am 24.10.2019 um 01:55 schrieb Matt Boyd:
>
> Hi QGISers,
> possibly a little OT but do any of the geologists on the list know of a
> pre-built structure for formation tops in well data?
>
> I'm thinking a relational DB structure that is able to be filtered by
> group / formation / member and provides more functionality than
> spreadsheets and with a smaller footprint than the monolithic
> geology databases that seem to be around.
>
> I've started building this myself but I'm more of a user than a designer.
>
> Thanks
> Matt
>
>
>
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Re: [Qgis-user] assign a symbol based on property in layer

[Matt Boyd]

Perfect, thanks  Harrissou.

On Thu, Oct 24, 2019 at 10:48 AM DelazJ  wrote:

> Hi Matt,
> In the vector layer properties, categorized symbology, at the bottom right
> of the dialog, you have an "Advanced" drop-down menu with options like "*Match
> to saved symbols" *or *"Match to symbols from file"* that should help you
> achieve what you want.
>
> Regards,
> Harrissou
>
> Le jeu. 24 oct. 2019 à 01:35, Matt Boyd  a écrit :
>
>> Hi QGISers,
>> I've got some shapefiles that have a symbology reference embedded in
>> them. I've also got a set of symbols that have the same name as the
>> specific symbology references. I haven't been able to work out how to get
>> qgis to automatically select the symbology reference. I can manually assign
>> each one and then save that as a qgis style for use later but there are a
>> lot of these and I possibly have other use cases.
>>
>> This would be useful for assigning colours based on geology in surface
>> maps.
>>
>> Any tips?
>>
>> Thanks
>> Matt
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[Qgis-user] Geology / formation database structure

[Matt Boyd]

Hi QGISers,
possibly a little OT but do any of the geologists on the list know of a
pre-built structure for formation tops in well data?

I'm thinking a relational DB structure that is able to be filtered by group
/ formation / member and provides more functionality than spreadsheets and
with a smaller footprint than the monolithic geology databases that seem to
be around.

I've started building this myself but I'm more of a user than a designer.

Thanks
Matt
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[Qgis-user] assign a symbol based on property in layer

[Matt Boyd]

Hi QGISers,
I've got some shapefiles that have a symbology reference embedded in them.
I've also got a set of symbols that have the same name as the specific
symbology references. I haven't been able to work out how to get qgis to
automatically select the symbology reference. I can manually assign each
one and then save that as a qgis style for use later but there are a lot of
these and I possibly have other use cases.

This would be useful for assigning colours based on geology in surface maps.

Any tips?

Thanks
Matt
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Re: [Qgis-user] Map matching in Qgis to plot trajectories

[Matt Boyd]

I haven't done this but was looking into it a while ago for post processing
some dodgy running tracks. I think the process is sometimes called
map-matching and this looked interesting.

https://github.com/graphhopper/map-matching/blob/master/README.md

On Fri, May 24, 2019 at 8:45 AM Chintan Advani 
wrote:

> Hey guys,
>
> I am looking to plot the paths for different vehicles in qgis using the
> co-ordinates but cannot find a solution to it. I tried plotting using point
> to path processor but the points connect linearly whereas I am looking to
> plot the path that are realistic (similar to what we observe in google
> maps). I am using OSM as the network layer for projection. I also tried the
> plugin tool "offline map matching" but that didn't help. Can anyone please
> help me with the problem?
>
> Thanks in advance,
> __
> Advani Chintan Sanjeev
> Research Scholar,
> Civil Engineering and Build Environment,
> Queensland University of Technology,
> Brisbane-4000, Australia.
>
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Re: [Qgis-user] CRS / reprojection problems

[Matt Boyd]

Sorry, I didn't describe the resolution in my email, just complained
quietly about something.

Somehow I'd loaded up epsg 4938, which is described as GDA94. I assumed
that was the geographic projection and it wasn't until later that I looked
at https://epsg.io/4938 and saw that it's got some odd projection going on.
I could see the meters in the projection but couldn't get past that I'd
selected GDA94. Now I dig into it a little more I can see that there's this
whole set of CRS under geocentric projections. I've either forgotten about
these or never knew.

The projection I meant to use was epsg 4283 GDA94 https://epsg.io/4283 .
Somehow in my project settings the default GDA94 projection which I've
always used had been superseded by the geocentric GDA94 and I didn't notice.

Thanks QGIS people.

Matt

On Thu, May 23, 2019 at 9:56 AM Matt Boyd  wrote:

> Kosza replied to me and suggested I try epsg 4283 instead of epsg 4938
>
> Is it usual to have 2 CRS with the same name, one of which appears to be
> projected and the other not, I don't think I've seen this before. There
> still seems to be something odd about 4938, but I don't see any reason to
> use it so it shouldn't bother me.
>
> Here's where I can learn something. Does anyone know what the deal with
> this is? I can see a need for a different projections, but is there
> supposed to be a better way of naming it that I didn't pick up on, am I
> going to need to remember epsg codes form now on?
>
> Thanks
> Matt
>
> On Wed, May 22, 2019 at 11:51 PM Nicolas Cadieux <
> nicolas.cadi...@archeotec.ca> wrote:
>
>> Hi,
>> Right clicking on the layer in the layer panel and changing the
>> projection to the correct one should then fix the problem.  Tell me if it’s
>> still a problem and I will also look at the data.
>> Nicolas
>>
>> Le 22 mai 2019 à 03:34,  
>> a écrit :
>>
>> Sorry to have to disagree with you, but there is something wrong with
>> your data. If I load the "lineations_GDA94" it claims to be a projected
>> data, and the units are clearly meters (numbers like -42854769,3100060 in
>> the coordinate readout). But if you check, you'd find that  QGIS thinks the
>> units are degrees:
>>
>>
>>
>> 
>>
>>
>>
>> Treating the meter cooridnates as degrees works as long as no
>> reprojection is needed, but will mess up things when combining it with
>> other data...
>>
>>
>>
>>
>>
>> --
>>
>> Barend Köbben
>>
>>
>>
>>
>>
>> On 22/05/2019, 05:54, "Qgis-user on behalf of Matt Boyd" <
>> qgis-user-boun...@lists.osgeo.org on behalf of mattsli...@gmail.com>
>> wrote:
>>
>>
>>
>> Hi Nicolas and Alexandre,
>>
>> I'm pretty sure that I've done as much as I can to make sure I haven't
>> screwed up the projections. I used to make those mistakes years ago when I
>> was first learning, lately the mistakes I've made are because I haven't
>> been paying attention... I'm pretty sure I'm paying attention this time.
>>
>>
>>
>> This is a link to some data and a qgis file I'm using as an example
>>
>>
>> https://unimelbcloud-my.sharepoint.com/:f:/g/personal/boydmc_student_unimelb_edu_au/EuUzfUvxA6NGmZOuYo8_fmkB0AvLldzBmXwq68mdwZvmcw?e=Ake4Qi
>>
>>
>>
>> lineations_MGA54_projected is the shapefile with the correctly projected
>> information layer. - Known good data
>>
>>
>>
>> If I change to a geogrpahic / unprojected coordinate system, for example
>> GDA94, this layer is not displayed and the canvas is blank.
>>
>>
>>
>> If I export the lineations_MGA54_projected data to a new file as
>> unprojected GDA94 option, the re-projected data is wrong.
>>
>>
>>
>> Thanks for your help
>>
>>
>>
>> Matt
>>
>>
>>
>>
>>
>>
>>
>>
>>
>>
>>
>>
>>
>> On Tue, May 21, 2019 at 11:37 PM Nicolas Cadieux <
>> nicolas.cadi...@archeotec.ca> wrote:
>>
>> Hi,
>>
>> 99 % of the time, the data is the problem because it’s in the wrong crs.
>> Right click on the problem layer in the layer panel and change the layer
>> crs to what is should be.  Use a google or other base map from quickmap
>> plugin.  That should permit you to find the correct CRS.
>>
>> Sometimes, crs will have problems reprojecting across some latitudes or
>> longitude (like projections make for the

Re: [Qgis-user] CRS / reprojection problems

[Matt Boyd]

Kosza replied to me and suggested I try epsg 4283 instead of epsg 4938

Is it usual to have 2 CRS with the same name, one of which appears to be
projected and the other not, I don't think I've seen this before. There
still seems to be something odd about 4938, but I don't see any reason to
use it so it shouldn't bother me.

Here's where I can learn something. Does anyone know what the deal with
this is? I can see a need for a different projections, but is there
supposed to be a better way of naming it that I didn't pick up on, am I
going to need to remember epsg codes form now on?

Thanks
Matt

On Wed, May 22, 2019 at 11:51 PM Nicolas Cadieux <
nicolas.cadi...@archeotec.ca> wrote:

> Hi,
> Right clicking on the layer in the layer panel and changing the projection
> to the correct one should then fix the problem.  Tell me if it’s still a
> problem and I will also look at the data.
> Nicolas
>
> Le 22 mai 2019 à 03:34,   a
> écrit :
>
> Sorry to have to disagree with you, but there is something wrong with your
> data. If I load the "lineations_GDA94" it claims to be a projected data,
> and the units are clearly meters (numbers like -42854769,3100060 in the
> coordinate readout). But if you check, you'd find that  QGIS thinks the
> units are degrees:
>
>
>
> 
>
>
>
> Treating the meter cooridnates as degrees works as long as no reprojection
> is needed, but will mess up things when combining it with other data...
>
>
>
>
>
> --
>
> Barend Köbben
>
>
>
>
>
> On 22/05/2019, 05:54, "Qgis-user on behalf of Matt Boyd" <
> qgis-user-boun...@lists.osgeo.org on behalf of mattsli...@gmail.com>
> wrote:
>
>
>
> Hi Nicolas and Alexandre,
>
> I'm pretty sure that I've done as much as I can to make sure I haven't
> screwed up the projections. I used to make those mistakes years ago when I
> was first learning, lately the mistakes I've made are because I haven't
> been paying attention... I'm pretty sure I'm paying attention this time.
>
>
>
> This is a link to some data and a qgis file I'm using as an example
>
>
> https://unimelbcloud-my.sharepoint.com/:f:/g/personal/boydmc_student_unimelb_edu_au/EuUzfUvxA6NGmZOuYo8_fmkB0AvLldzBmXwq68mdwZvmcw?e=Ake4Qi
>
>
>
> lineations_MGA54_projected is the shapefile with the correctly projected
> information layer. - Known good data
>
>
>
> If I change to a geogrpahic / unprojected coordinate system, for example
> GDA94, this layer is not displayed and the canvas is blank.
>
>
>
> If I export the lineations_MGA54_projected data to a new file as
> unprojected GDA94 option, the re-projected data is wrong.
>
>
>
> Thanks for your help
>
>
>
> Matt
>
>
>
>
>
>
>
>
>
>
>
>
>
> On Tue, May 21, 2019 at 11:37 PM Nicolas Cadieux <
> nicolas.cadi...@archeotec.ca> wrote:
>
> Hi,
>
> 99 % of the time, the data is the problem because it’s in the wrong crs.
> Right click on the problem layer in the layer panel and change the layer
> crs to what is should be.  Use a google or other base map from quickmap
> plugin.  That should permit you to find the correct CRS.
>
> Sometimes, crs will have problems reprojecting across some latitudes or
> longitude (like projections make for the poles).  In that case,
> reprojecting the data using the “save as” option will solve the problem.
>
> Nicolas
>
> > Le 20 mai 2019 à 21:53, Matt Boyd  a écrit :
> >
> > Hi QGISers,
> > I'm having an issue with reprojecting things in QGIS.
> > Installer OSGEO64W
> > Latest version and LTS both have same issue.
> >
> > Issue:
> > reprojection just isn't working. If I load a data set with decimal
> degrees and another with a projected coordinate system the data (points /
> lines / polygons) will only display if the basemap is in the same
> projection system.
> >
> > This is happening across 2 PCs, (windows10) and the LTS and latest
> versions of QGIS. Has anyone got some troubleshooting tips?
> >
> > Thanks
> > Matt
> > ___
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Re: [Qgis-user] CRS / reprojection problems

[Matt Boyd]

Hi Nicolas and Alexandre,
I'm pretty sure that I've done as much as I can to make sure I haven't
screwed up the projections. I used to make those mistakes years ago when I
was first learning, lately the mistakes I've made are because I haven't
been paying attention... I'm pretty sure I'm paying attention this time.

This is a link to some data and a qgis file I'm using as an example
https://unimelbcloud-my.sharepoint.com/:f:/g/personal/boydmc_student_unimelb_edu_au/EuUzfUvxA6NGmZOuYo8_fmkB0AvLldzBmXwq68mdwZvmcw?e=Ake4Qi

lineations_MGA54_projected is the shapefile with the correctly projected
information layer. - Known good data

If I change to a geogrpahic / unprojected coordinate system, for example
GDA94, this layer is not displayed and the canvas is blank.

If I export the lineations_MGA54_projected data to a new file as
unprojected GDA94 option, the re-projected data is wrong.

Thanks for your help

Matt






On Tue, May 21, 2019 at 11:37 PM Nicolas Cadieux <
nicolas.cadi...@archeotec.ca> wrote:

> Hi,
>
> 99 % of the time, the data is the problem because it’s in the wrong crs.
> Right click on the problem layer in the layer panel and change the layer
> crs to what is should be.  Use a google or other base map from quickmap
> plugin.  That should permit you to find the correct CRS.
>
> Sometimes, crs will have problems reprojecting across some latitudes or
> longitude (like projections make for the poles).  In that case,
> reprojecting the data using the “save as” option will solve the problem.
>
> Nicolas
>
> > Le 20 mai 2019 à 21:53, Matt Boyd  a écrit :
> >
> > Hi QGISers,
> > I'm having an issue with reprojecting things in QGIS.
> > Installer OSGEO64W
> > Latest version and LTS both have same issue.
> >
> > Issue:
> > reprojection just isn't working. If I load a data set with decimal
> degrees and another with a projected coordinate system the data (points /
> lines / polygons) will only display if the basemap is in the same
> projection system.
> >
> > This is happening across 2 PCs, (windows10) and the LTS and latest
> versions of QGIS. Has anyone got some troubleshooting tips?
> >
> > Thanks
> > Matt
> > ___
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> > Qgis-user@lists.osgeo.org
> > List info: https://lists.osgeo.org/mailman/listinfo/qgis-user
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[Qgis-user] CRS / reprojection problems

[Matt Boyd]

Hi QGISers,
I'm having an issue with reprojecting things in QGIS.
Installer OSGEO64W
Latest version and LTS both have same issue.

Issue:
reprojection just isn't working. If I load a data set with decimal degrees
and another with a projected coordinate system the data (points / lines /
polygons) will only display if the basemap is in the same projection system.

This is happening across 2 PCs, (windows10) and the LTS and latest versions
of QGIS. Has anyone got some troubleshooting tips?

Thanks
Matt
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[Qgis-user] Change default color bar for single band rasters

[Matt Boyd]

Hi QGISers,
I'm trying to change the default color bar from black-white to spectral
when loading single band rasters (drag and drop onto the canvas).
I know I can edit each rasters properties individually as well as copy and
paste styles, however this is the step I'd like to avoid.

Thanks
Matt
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[Qgis-user] Convert arc .lyr to qgis

[Matt Boyd]

Hi QGIS people,
I've got a shapefile issued by one of the geological surveys with a .lyr
for styling in ARC also available.

I have tried a couple of plugins / converters to try to get it into
something arc can read but I'm not having any luck. So far I've
tried arcmap2sld and slyr. arcmap2sld crashes with an error in german and
SLYR wants .style files that I don't have.

Has anyone got one of those working? Tips would be appreciated.

Thanks
Matt
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[Qgis-user] Crayfish Plugin

[Matt Boyd]

Hi QGISers,
I've started doing work (well, study and also not so much doing as
learning) with geological models in with time and other parameter series
mesh grids.
I'm trying to get some data in xdmf format into Crayfish. Is there anyone
who is working with this sort of data on this list? I'm havign trouble
getting my data loaded. various errors and what could be unsupported
formats.

Thanks
Matt
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Re: [Qgis-user] script filegdb to spatial lite

[Matt Boyd]

Thanks martin,
thats an excellent starting point for me. I'd already started digging into
ogr2ogr and the options you have there are good.
Does spatialite allow points, lines and polygon in the same database / file?

On Thu, Nov 9, 2017 at 3:11 PM, Martin Bain 
wrote:

> Matt,
>
> Have a look into the ogr2ogr.exe which is installed with QGIS.
>
>
>
> It’s a command line program that converts formats.  You could make a batch
> script to get the data you want one layer at a time into a single
> spatialite db.  I’m afraid you got a bit of work to do to figure out the
> options for your input and output formats.
>
>
>
> Here’s a sample I found on my hard drive that I did some time ago to get
> data from a SQL Server table into Spatialite, to give you an idea of what’s
> involved.  I don’t remember what all options are :P
>
>
>
> C:\OSGeo4W\bin\ogr2ogr.exe -f SQlite "C:\output7.sqlite"
> "MSSQL:server=;database=;trusted_connection=yes;" -sql "SELECT *
> FROM lOT" -a_srs "EPSG:28356" -dsco SPATIALITE=yes -nln "LOT" -nlt
> PROMOTE_TO_MULTI -geomfield SP_GEOMETRY –append
>
>
>
> Good luck.
>
>
>
> *From:* Qgis-user [mailto:qgis-user-boun...@lists.osgeo.org] *On Behalf
> Of *Matt Boyd
> *Sent:* Thursday, 9 November 2017 2:53 PM
> *To:* qgis-user 
> *Subject:* [Qgis-user] script filegdb to spatial lite
>
>
>
> Hi QGISers,
>
> I'm working from a corporate dataset, mostly geodatabases located on a
> network drive.
>
> I'd like to make a portable version of the datasets that I use that's
> updated either automaticaly, or whenever I run a script.
>
> I'm not 100% sure how spatialite works. Is everything in a single file
> database? I'd like to just create a script only grabbing the data I specify
> from the network drive and save that locally.
>
> I don't do the database updating so it's only a one way process.
>
>
>
> Has anyone done something like this? are there shortcuts?
>
>
>
> Thanks
>
> Matt
>
> This email is intended for the named recipient only. The information it
> contains may be confidential. If you are not the intended recipient you
> must not reproduce or distribute any part of this email, disclose its
> contents to any other party or take any action in reliance on it. If you
> have received this email in error, please contact the sender immediately
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[Qgis-user] script filegdb to spatial lite

[Matt Boyd]

Hi QGISers,
I'm working from a corporate dataset, mostly geodatabases located on a
network drive.
I'd like to make a portable version of the datasets that I use that's
updated either automaticaly, or whenever I run a script.
I'm not 100% sure how spatialite works. Is everything in a single file
database? I'd like to just create a script only grabbing the data I specify
from the network drive and save that locally.
I don't do the database updating so it's only a one way process.

Has anyone done something like this? are there shortcuts?

Thanks
Matt
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[Qgis-user] QGIS one to many filter

[Matt Boyd]

Hi QGISers,
I'm using the relations in the project options to link a location with
attributes for that location.

For each location I have a varying number of attributes in the linked
database (using spatialite).

I'd like to only display the location that have a particular attribute
value present, there may be multiple results for the same attribute but if
any of them are present then display the location.

I've seen this done in arc and the video for the select by attribute (in
Italian) plugin looks like it should work but I can't get any of the
options in that video to show.

Any tips?

thanks
matt
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Re: [Qgis-user] Exporting Raster layer to text file

[Matt Boyd]

David,
have you tried to transform the data to the X/Y projection as a separate
process either before or after changing the format? I'm having issues
getting QGIS installed here so I can't run through the process and tell you
how.

matt

On Mon, Sep 18, 2017 at 11:58 AM, David Reid 
wrote:

> Thanks Matt + other respondents to my question.
>
>
>
> I should have been more specific  -  The raster image/data I am trying to
> export is a DEM which I would like to transfer to a 3D modelling system.
>
>
>
> Using the raster/conversion/translate menu I have managed to get most of
> the way, using the ASCII gridded XYZ format output.  This produces a text
> file with XY coordinates and the elevation Z.
>
>
>
> BUT I would like the X and Y in planar grid coordinates (metres).  I have
> selected a plane grid projection as the “target SRS”  but it still produces
> X and Y as lat/long coordinates.
>
>
>
> Any suggestions about what I am doing wrong?
>
>
>
> Cheers
>
>
>
> David Reid
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
> *From:* Matt Boyd [mailto:mattsli...@gmail.com]
> *Sent:* Friday, 15 September 2017 3:28 PM
> *To:* David Reid 
> *Cc:* qgis-user 
> *Subject:* Re: [Qgis-user] Exporting Raster layer to text file
>
>
>
> David,
>
> also you may find that even though you select a different format it only
> saves as a tiff. If you look at the box that states the command line
> gdaltranslate is using, the -o flag is the output format. You can check the
> box next to the command line and change that manually if it doesn't change
> to tiff automatically. Think it's a bug. the output format options can be
> googled "-o zmap" works.
>
>
>
> On Fri, Sep 15, 2017 at 5:24 PM, Matt Boyd  wrote:
>
> Hi David,
>
> rasters come in a few different flavours.
>
> RGB/greyscale photographic type images such as an aerial photograph or a
> georeferenced scan of a map are one. There's not a lot of point exporting
> those as text.
>
>
>
> There are also Raster images where the RGB / black bands represent a
> frequency or attribute from a satellite or remote sensing instrument, you
> might want to convert those to a different format to use in a different
> package or just select a single band to work on.
>
>
>
> Single band raster such as grids or DEMS are another type of raster.
>
>
>
> The last 2 types above can be saved in alternate formats under the
> "convert format" option in the raster dropdown options somewhere, can't
> remember the exact name.
>
>
>
> I usually do this with grids / single band rasters. the command line
> option is gdaltranslate. "save as" doesn't work the same way it does as
> with vector data.
>
>
>
> I don't have QGIS open at the so I can't recommend a format but I think
> CSV is one of them.
>
>
>
> Good luck
>
> Matt
>
>
>
>
>
> On Wed, Sep 13, 2017 at 3:45 PM, David Reid 
> wrote:
>
> Hello qgis users,
>
>
>
> I am very new to qgis and would like information on how to export raster
> data as a text file.
>
>
>
> Cheers
>
>
>
> David Reid
>
>
>
>
>
>
>
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Re: [Qgis-user] Exporting Raster layer to text file

[Matt Boyd]

David,
also you may find that even though you select a different format it only
saves as a tiff. If you look at the box that states the command line
gdaltranslate is using, the -o flag is the output format. You can check the
box next to the command line and change that manually if it doesn't change
to tiff automatically. Think it's a bug. the output format options can be
googled "-o zmap" works.

On Fri, Sep 15, 2017 at 5:24 PM, Matt Boyd  wrote:

> Hi David,
> rasters come in a few different flavours.
> RGB/greyscale photographic type images such as an aerial photograph or a
> georeferenced scan of a map are one. There's not a lot of point exporting
> those as text.
>
> There are also Raster images where the RGB / black bands represent a
> frequency or attribute from a satellite or remote sensing instrument, you
> might want to convert those to a different format to use in a different
> package or just select a single band to work on.
>
> Single band raster such as grids or DEMS are another type of raster.
>
> The last 2 types above can be saved in alternate formats under the
> "convert format" option in the raster dropdown options somewhere, can't
> remember the exact name.
>
> I usually do this with grids / single band rasters. the command line
> option is gdaltranslate. "save as" doesn't work the same way it does as
> with vector data.
>
> I don't have QGIS open at the so I can't recommend a format but I think
> CSV is one of them.
>
> Good luck
> Matt
>
>
> On Wed, Sep 13, 2017 at 3:45 PM, David Reid 
> wrote:
>
>> Hello qgis users,
>>
>>
>>
>> I am very new to qgis and would like information on how to export raster
>> data as a text file.
>>
>>
>>
>> Cheers
>>
>>
>>
>> David Reid
>>
>>
>>
>>
>>
>> ___
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Re: [Qgis-user] Exporting Raster layer to text file

[Matt Boyd]

Hi David,
rasters come in a few different flavours.
RGB/greyscale photographic type images such as an aerial photograph or a
georeferenced scan of a map are one. There's not a lot of point exporting
those as text.

There are also Raster images where the RGB / black bands represent a
frequency or attribute from a satellite or remote sensing instrument, you
might want to convert those to a different format to use in a different
package or just select a single band to work on.

Single band raster such as grids or DEMS are another type of raster.

The last 2 types above can be saved in alternate formats under the "convert
format" option in the raster dropdown options somewhere, can't remember the
exact name.

I usually do this with grids / single band rasters. the command line option
is gdaltranslate. "save as" doesn't work the same way it does as with
vector data.

I don't have QGIS open at the so I can't recommend a format but I think CSV
is one of them.

Good luck
Matt


On Wed, Sep 13, 2017 at 3:45 PM, David Reid  wrote:

> Hello qgis users,
>
>
>
> I am very new to qgis and would like information on how to export raster
> data as a text file.
>
>
>
> Cheers
>
>
>
> David Reid
>
>
>
>
>
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Re: [Qgis-user] How to outline regions consisting of multiple fields

[Matt Boyd]

Hi Jereon,
what I think you wan to do is create a merged region "A" layer that sits on
top of your municipalities layer.
You could do this by copying the municipalities layer. Then, on the copied
layer merge the municipalities by attribute (the region attribute).
Then set the properties of each layer visualization to suit.

I don't think there is a way to just select the outline / extent of the
regions from the municipalities and display that but still keep the
municipalities separate. There may be something with a virtual view if you
loaded it into a GIS database but I'm just guessing now.


Matt

On Mon, Sep 11, 2017 at 10:04 AM, Jeroen Hovens  wrote:

> Hi all,
>
>
>
> I am trying to create a map with different visualizations for different
> attributes.
>
> The map is a basic municipalities map and has at least two other
> attributes that I want to show.
>
> Each municipality (each field/polygon) belongs to a region (attribute A)
>  and each municipality has a feature of some sort (attribute B).
>
> Now I am trying to create a map that will show the borders of the
> municipalities (the basic polygons in simple thin outline), the outer
> borders of the region (only a thick outline) and for each municipality a
> color representing the value of the ‘feature’.
>
>
>
> My question is: how do I create only a thick outline of the outer border
> for each region on my basic municipality map?
>
> I can give each region a color (style rule > categorize), but I don’t know
> how to create an outline of the region border. Anything I try with lines
> affects every single polygon instead of just the outer border of the region.
>
> Is it possible without creating a new layer with the regions as polygons?
>
> Since I will color each municipality according to ‘attribute B’, I want
> just the outer border for each region to be visible to visually indicate to
> which region the municipality belongs.
>
>
>
> Any idea’s?
>
>
>
> Regards,
>
> Jeroen Hovens
>
>
>
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Re: [Qgis-user] limiting contour lines to range of elevations

[Matt Boyd]

Right click on the contour other and filter.
You can select only the contours you want field=X or field=y.
The syntax is in SQL, so you can look up a query that matches your
requirements..



On 1 Jul. 2017 4:00 am, "imagineaerial"  wrote:

> Hey all,
>
> New QGIS user here and I have been experimenting with a few holes on our
> clients golf courses.  I was wondering how I can display contour lines on
> DSM maps but only display a range of elevations (i.e. from 0 - 10 ft
> elevation).  Most of the courses have tree lined holes and we only need the
> contours to show up on the turf area, not the trees and buildings.
> Thanks all,
>
> - Mike
>
>
>
> --
> View this message in context: http://osgeo-org.1560.x6.
> nabble.com/limiting-contour-lines-to-range-of-elevations-tp5326289.html
> Sent from the QGIS - User mailing list archive at Nabble.com.
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Re: [Qgis-user] CSV Loading broken in 2.18.8 on Ubuntu?

[Matt Boyd]

Thanks Jurgen,
I ran updates to day and it's fixed.

Matt

On Sat, May 27, 2017 at 8:36 PM, Jürgen E. Fischer  wrote:

> Hi Matt,
>
> On Sat, 27. May 2017 at 17:23:32 +1000, Matt Boyd wrote:
> > Does anyone know how often the Ubuntu repo gets updated?
>
> The nightly repositories usually every day, unless the builds take longer
> than
> 24h to complete, which occasionally happens when there has been movement on
> all three branches - or when a release is built instead.  The fix should
> have
> been in the nightly repositories for a couple of days already.
>
> But 2.18.9 will appear in the release repositories shortly too.
>
>
> Jürgen
>
> --
> Jürgen E. Fischer   norBIT GmbH Tel.
> +49-4931-918175-31
> Dipl.-Inf. (FH) Rheinstraße 13  Fax.
> +49-4931-918175-50
> Software Engineer   D-26506 Norden
> http://www.norbit.de
> QGIS release manager (PSC)  GermanyIRC: jef on FreeNode
>
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Re: [Qgis-user] CSV Loading broken in 2.18.8 on Ubuntu?

[Matt Boyd]

Yes, I had this issue as well and from what I can understand it is broken.

I think the bug has been fixed but we now need to wait for it to roll
through to whenever the next update/patch for Ubuntu QGIS is due. I don't
know when this will be.

Does anyone know how often the Ubuntu repo gets updated?

Matt

On 24 May 2017 10:30 pm, "Ian Turton"  wrote:

> I just tried to load a CSV file with no geometry selected (attached below)
> into QGIS
>
> QGIS version
>
> 2.18.8
>
> QGIS code revision
>
> af8fb04 
>
> Compiled against Qt
>
> 4.8.6
>
> Running against Qt
>
> 4.8.6
>
> Compiled against GDAL/OGR
>
> 2.1.0
>
> Running against GDAL/OGR
>
> 2.1.0
>
> Compiled against GEOS
>
> 3.5.0-CAPI-1.9.0
>
> Running against GEOS
>
> 3.5.0-CAPI-1.9.0 r4084
>
> PostgreSQL Client Version
>
> 9.3.4
>
> SpatiaLite Version
>
> 4.1.1
>
> QWT Version
>
> 5.2.3
>
> PROJ.4 Version
>
> 480
>
> QScintilla2 Version
>
> 2.8.1
>
>
>  and got the following;
>
> ➜  ~  qgis
> Warning: loading of qgis translation failed [/usr/share/qgis/i18n//qgis_
> en_GB]
> Warning: loading of qt translation failed [/usr/share/qt4/translations/
> qt_en_GB]
> Warning: QCss::Parser - Failed to load file  "/style.qss"
> Warning: QLayout: Attempting to add QLayout "" to QgsPanelWidgetStack
> "mWidgetStack", which already has a layout
> Vector Tile Reader Plugin loaded...
> Creating logging config failed: (, IOError(2,
> 'No such file or directory'), )
> Lower left (0.,0.)
> Upper right (0.,0.)
> Normal size mode
> # EasyCustomLabeling debug trace: plugin loaded at 2017-05-24
> 13:26:26.856510
> ERROR 1: Random access not supported for /vsizip
> ERROR 1: Random access not supported for /vsizip
> ERROR 1: Random access not supported for /vsizip
> ERROR 1: Random access not supported for /vsizip
> ERROR 1: Random access not supported for /vsizip
> ERROR 1: Random access not supported for /vsizip
> ERROR 1: Random access not supported for /vsizip
> ERROR 1: Random access not supported for /vsizip
> ERROR 1: Random access not supported for /vsizip
> ERROR 1: Random access not supported for /vsizip
> ERROR 1: Random access not supported for /vsizip
>
> (qgis.bin:18086): Gtk-CRITICAL **: IA__gtk_widget_get_direction: assertion
> 'GTK_IS_WIDGET (widget)' failed
>
> (qgis.bin:18086): Gtk-CRITICAL **: IA__gtk_widget_get_direction: assertion
> 'GTK_IS_WIDGET (widget)' failed
> Fatal: ASSERT failure in QList::at: "index out of range", file
> /usr/include/qt4/QtCore/qlist.h, line 469
> Stacktrace (piped through c++filt):
> /usr/bin/qgis.bin(+0xb092)[0x7fdeebbf6092]
> /usr/bin/qgis.bin(myMessageOutput(QtMsgType, char
> const*)+0x3a)[0x7fdeebbf621a]
> /usr/lib/x86_64-linux-gnu/libQtCore.so.4(qt_message_output(QtMsgType,
> char const*)+0x21)[0x7fdee9669bb1]
> /usr/lib/x86_64-linux-gnu/libQtCore.so.4(+0x70ff9)[0x7fdee9669ff9]
> /usr/lib/x86_64-linux-gnu/libQtCore.so.4(qFatal(char const*,
> ...)+0x94)[0x7fdee966a804]
> /usr/lib/libqgis_app.so.2.18.8(QgisApp::addVectorLayer(QString const&,
> QString const&, QString const&)+0x371)[0x7fdeeb1108a1]
> /usr/lib/libqgis_app.so.2.18.8(+0x4ff39d)[0x7fdeeb49439d]
> /usr/lib/x86_64-linux-gnu/libQtCore.so.4(QMetaObject::activate(QObject*,
> QMetaObject const*, int, void**)+0x2da)[0x7fdee978a87a]
> /usr/lib/qgis/plugins/libdelimitedtextprovider.so(+
> 0x2b90c)[0x7fde5e13690c]
> /usr/lib/qgis/plugins/libdelimitedtextprovider.so(+
> 0x231bb)[0x7fde5e12e1bb]
> /usr/lib/qgis/plugins/libdelimitedtextprovider.so(+
> 0x2b9c8)[0x7fde5e1369c8]
> /usr/lib/qgis/plugins/libdelimitedtextprovider.so(+
> 0x2bb63)[0x7fde5e136b63]
> /usr/lib/x86_64-linux-gnu/libQtCore.so.4(QMetaObject::activate(QObject*,
> QMetaObject const*, int, void**)+0x4d8)[0x7fdee978aa78]
> /usr/lib/x86_64-linux-gnu/libQtCore.so.4(QMetaObject::activate(QObject*,
> QMetaObject const*, int, void**)+0x2da)[0x7fdee978a87a]
> /usr/lib/x86_64-linux-gnu/libQtGui.so.4(QAbstractButton:
> :clicked(bool)+0x32)[0x7fdee915e172]
> /usr/lib/x86_64-linux-gnu/libQtGui.so.4(+0x57ba63)[0x7fdee8ec1a63]
> /usr/lib/x86_64-linux-gnu/libQtGui.so.4(+0x57cbd3)[0x7fdee8ec2bd3]
> /usr/lib/x86_64-linux-gnu/libQtGui.so.4(QAbstractButton:
> :mouseReleaseEvent(QMouseEvent*)+0x6c)[0x7fdee8ec2cbc]
> /usr/lib/x86_64-linux-gnu/libQtGui.so.4(QWidget::event(QEvent*)+0xaca)[
> 0x7fdee8b5f51a]
> /usr/lib/x86_64-linux-gnu/libQtGui.so.4(QApplicationPrivate::notify_helper(QObject*,
> QEvent*)+0x8c)[0x7fdee8b0fe2c]
> /usr/lib/x86_64-linux-gnu/libQtGui.so.4(QApplication::notify(QObject*,
> QEvent*)+0x3ad)[0x7fdee8b165dd]
> /usr/lib/libqgis_core.so.2.18.8(QgsApplication::notify(QObject*,
> QEvent*)+0x5b)[0x7fdee9db7f7b]
> /usr/lib/x86_64-linux-gnu/libQtCore.so.4(QCoreApplication::notifyInternal(QObject*,
> QEvent*)+0x6d)[0x7fdee97764dd]
> /usr/lib/x86_64-linux-gnu/libQtGui.so.4(QApplicationPrivate::sendMouseEvent(QWidget*,
> QMouseEvent*, QWidget*, QWidget*, QWidget**, QPointer&,
> bool)+0x153)[0x7fdee8b15d93]
> /usr/lib/x86_64-linux-gnu/libQtGui.so.4(+0x2449eb)[0x

[Qgis-user] Melbourne training

[Matt Boyd]

Hi QGISers,
Is anyone aware of training providers for qgis in Melbourne, Australia?

Thanks
Matt Boyd
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Re: [Qgis-user] Keeping only POIs X kms from a trace?

[Matt Boyd]

Hi Winfried,
usually in QGIS, unless it's specified differently, the distance field is
in the same units as the project properties. So, 5km would be 5000m in the
the projected UTM zones which use meters.
If 0,05 worked then I assume that your project is in
degrees/minutes/seconds (https://en.wikipedia.org/wiki/Decimal_degrees)
which is approximately 5km at the equator, close enough for what you want
to do this time.

One of the key things you'll need to know about if you keep working on GIS
stuff is projections, QGIS can automatically reproject for map displays.
However, when doing a calculation / operation that involves 2 or more
inputs then I make sure to reproject all the inputs to the same system and
work on those files only (save as and select a common projection) knowing
the UTM zone or whatever meters/feet projection is used locally is helpful
when you need to work out distances and areas in useful units.

Matt



On Tue, May 9, 2017 at 7:22 PM, Winfried  wrote:

> Thank you.
>
> Turns out I was pretty close to the solution: The error was in the order
> parameters were set in the Spatial Query dialog. Also, there is no
> information on the unit used for Distance in the Fixed Distance Buffer; I
> guess "0,05" means 5kms.
>
> 
>
> I'll see if a simple Python script can perform the same thing, or even
> split
> campsites into regions instead of whole nations.
>
>
>
> --
> View this message in context: http://osgeo-org.1560.x6.
> nabble.com/Keeping-only-POIs-X-kms-from-a-trace-tp5319730p5319849.html
> Sent from the QGIS - User mailing list archive at Nabble.com.
> ___
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Re: [Qgis-user] Keeping only POIs X kms from a trace?

[Matt Boyd]

Winfried,
it's difficult for people to offer help if they don't know where to start,
the knowledge level of the person asking the question is basic input.
I don't think anyone is going to answer a question if someone says they
know nothing about GIS, it's too much work if it sounds like someone needs
to be taught and hasn't started reading the online help or tried out the
online tutorials (I've no idea if there are any). But here goes anyway.

The question you have asked is relatively simple.

load your vector lines - this is your bike route into QGIS. If it comes in
as points you'll need to make them into lines.
load the points you want to sample - your campsites

create a fixed distance buffer around the lines, this will be a polygon (a
closed shape, not a line, lines are different) there's a tool under the
vector menu called fixed distance buffer or something like that.

use this polygon and the intersect or clip tools to select and save the
points you want that are within the buffer you created,save/export those as
gpx.

Good luck.



On Mon, May 8, 2017 at 10:45 PM, Winfried  wrote:

> Hello
>
> Archie's Campings* offers a pretty thorough list of campsites in Europe.
>
> Problem is, files are only country-size, so the number of waypoints is
> overwhelming (Here's the UK for instance**).
>
> To plan bike tours, I'd like to…
> 1) import a trace from a GPX file,
> 2) import Archie's list for a given country,
> 3) filter that list to only keep campsites that are 5 kms from the route,
> and
> 4) export the output to a GPX file.
>
> This can be probably be done with QGIS, but I know nothing about GIS :-/
>
> Thanks for any help.
>
> * http://www.archiescampings.eu/
> ** https://s7.postimg.org/4mck58dbf/Archie.s.Campings.UK.png
>
>
>
> --
> View this message in context: http://osgeo-org.1560.x6.
> nabble.com/Keeping-only-POIs-X-kms-from-a-trace-tp5319730.html
> Sent from the QGIS - User mailing list archive at Nabble.com.
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Re: [Qgis-user] garbage truck route optimization

[Matt Boyd]

There is mention on the qgis plugins website of a postman problem route
optimisation plugin. But I wasn't able to find it via the plugins menu.



On 4 May 2017 2:27 pm, "Stéphane Henriod"  wrote:

> Hi Marco
>
> I guess you should look into the Network Analysis tool
> http://docs.qgis.org/2.14/en/docs/training_manual/vector_
> analysis/network_analysis.html
>
> It however calculates the shortest path between 2 points. Not sure how to
> tweak it to optimize the route between X points.
>
> Maybe some ideas here: http://www.ijetae.com/files/Volume5Issue7/IJETAE_
> 0715_17.pdf
>
> You can always do it programmatically. Some possible algorithms are
> described here: http://wiki.gis.com/wiki/index.php/Travelling_salesman_
> problem
>
> Or is there a tool / plugin I am not aware of?
>
> Cheers
>
> Stéphane
>
>
> Le mardi 2 mai 2017, Marco Antônio Ferreira Pedrosa 
> a écrit :
>
>> Hi all!
>>
>> Does anybody knows any tools to optimize garbage truck routes in QGIS?
>>
>> --
>>
>> Marcão
>>
>>
>> skype: marco.afp
>>
>
>
> --
> Stéphane Henriod
> CIM-Expert for GIS and Green Economy Statistics
>
> Национальный статистический комитет Кыргызской Республики
> Кыргыз Республикасынын Улуттук статистика комитети
> National Statistical Committee of the Kyrgyz Republic
>
> 374 Фрунзе ул. / Frunze str.
> 720033 Бишкек / Bishkek
>
> T   +996 778 46 99 02 (KG)
> T   +49 176 280 11 050 <+49%20176%2028011050> (DE)
> Es...@henriod.info
> W   http://www.stat.kg
> W3W: nightfall.into.bucket
>   //  запас.союз.дружный
> 
>
>
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[Qgis-user] filter by date field

[Matt Boyd]

Hi QGISers
I'm trying to filter some data by date.
The field is classified as date data (it's a shapefile) and it's formatted
/mm/dd

If create a filter

"datafield" < '2000/01/01' I get a type mismatch error,

Same error using BETWEEN

I can get it to work if I export as csv and change 2000/01/01 to 2000-01-01
then use a join on the ID, then save that as a new shapefile and then
filter by the 2000-01-01 field

I'm assuming that a / isn't an acceptable date delimiter. Does anyone know
if this is expected behavior and if I can do something to avoid this step?

Thanks
matt
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Re: [Qgis-user] How to edit repetitive data in QGIS

[Matt Boyd]

Can you select the features you want by a function using the same street
name, then
Edit - merge selected features.

On 15 Dec 2016 08:40, "Charlotte Wolter"  wrote:

> Hello, all,
>
> I created a query for data from OpenStreetMap using
> overpassturbo.eu. I needed major street, so used the expression
> highway=primary. The area was a large section of Los Angeles, about 1/6th
> of the city, the area called South Bay.
> I got the steeets I need, no problem. But, I also got the street
> names repeating over and over, because the streets are broken into segments
> by changes, such as a bridge or a change in speed limit, etc., etc.
> I am looking for a way to solve this issue, such as editing the
> data to remove the names from some of these segments. I have opened the
> data in the "Attributes Table," but I can't seem to edit it there (which
> would be handy). So, if QGIS does not support editing a data file, is there
> some other way to do it?
> Thanks!
>
> Charlotte Wolter
>
>
>
> Charlotte Wolter
> 927 18th Street Suite A
> Santa Monica, California
> 90403
> +1-310-597-4040
> techl...@techlady.com
> Skype: thetechlady
>
>
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[Qgis-user] extract / merge data from raster to vector

[Matt Boyd]

Hi QGISers,
I've got an ers raster file with elevations and a series of locations as a
vector / shapefile.

What I would like to do is query the ers raster at the point locations and
add the value at that point to the vector file.

How do I go about this?

Thanks
Matt
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[Qgis-user] Style - color bar invert continous

[Matt Boyd]

Hi QGISers,
just upgraded to 2.16 on windows 7 64bit.

I'm working with a single band raster in psuedocolor and the combination of
mode+invert doesn't invert the color bar. The other options do invert the
color bar (mode + equal interval & quantile with invert).

I haven't noticed this behaviour in previous versions. Is this a bug or a
feature?

Thanks
Matt
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[Qgis-user] Raster statistics manipulation

[Matt Boyd]

Hi QGISers,
I've got a raster / grid that's been normalised to values between 0 and 1.
What I need to do is use this grid to create another grid that uses the
normalised grid as an influence. I've done this before using krigin but
can;'t quite work out how to get there.

Inputs: Grid 0-1 values, distribution is close to normal with a median
value of around 0.25.

I want to create a grid with a similar distributiuon, standard deviation
etc but that has a median value around 0.5

Any tips?

Thanks
Matt
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[Qgis-user] DMARC and spam, message to list admins

[Matt Boyd]

Hi qgisers,
I've noticed a lot of the list email I'm getting is being classified as
spam.

I admin a small mailing list and had a lot of similar problems with Yahoo,
Gmail and Hotmail emails all being rejected. There were settings within my
mailing list software to mitigate this.  I think it's got something to do
with the major webmail providers starting to enforce DMARC relatively
recently.

Regards
Matt
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Re: [Qgis-user] Projection / Custom CRS help [SEC=UNCLASSIFIED]

[Matt Boyd]

I'll answer my own question here the data I've got looks like it's related
to this..

http://www.ga.gov.au/scientific-topics/positioning-navigation/geodesy/geodetic-datums/historical-datums-of-australia/australian-national-grid



On Mon, May 9, 2016 at 5:22 PM, Bruce Bannerman 
wrote:

> Hi Matt,
>
> It is possible that the data is based on the Australian National Grid
> using Clarke 1858. See:
>
>
> http://www.ga.gov.au/scientific-topics/positioning-navigation/geodesy/geodetic-datums/historical-datums-of-australia/australian-national-grid
>
> Bruce
> --
> *From:* Qgis-user  on behalf of Phil
> (The Geek) Wyatt 
> *Sent:* Monday, 9 May 2016 4:01:01 PM
> *To:* 'Matt Boyd'; 'qgis-user'
> *Subject:* Re: [Qgis-user] Projection / Custom CRS help
>
>
> Here is a good place to start for information on older datums.
>
>
>
>
> http://www.ga.gov.au/scientific-topics/positioning-navigation/geodesy/geodetic-datums/historical-datums-of-australia/australian-map-grid
>
>
>
>
> http://www.ga.gov.au/scientific-topics/positioning-navigation/geodesy/geodetic-datums/historical-datums-of-australia
>
>
>
> But I would be trying AGD66 first as the most likely contender at that
> time.
>
>
>
> Cheers - Phil
>
>
>
> *From:* Qgis-user [mailto:qgis-user-boun...@lists.osgeo.org] *On Behalf
> Of *Matt Boyd
> *Sent:* Monday, 9 May 2016 2:07 PM
> *To:* qgis-user
> *Subject:* [Qgis-user] Projection / Custom CRS help
>
>
>
> Hi QGISer's,
>
> I've got some data acquired in Australia in 1967. The acquisition reports
> mention a false easting and northing and a TM projection.
>
> I'm assuming TM means Transverse Mercator.
>
> It's early 1967 data and doesn't mention AGD66 anywhere. However a some of
> the reference docs mention measurements in yards and feet.
>
>
>
> All of the historical analysis of the data that I can find dates back to
> the early 1980's and late 1970's and these all assume AGD66.
>
>
>
> I would like to be able to create a custom CRS that I can load the
> original data into (or a smaller portion of it) to confirm that the data
> has been transformed over the years correctly.
>
>
>
> Is anyone familiar with pre-AGD66 projections in Australia and any idea
> how I'd go down this road?
>
>
>
> Thanks
>
> Matt
>
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[Qgis-user] Projection / Custom CRS help

[Matt Boyd]

Hi QGISer's,
I've got some data acquired in Australia in 1967. The acquisition reports
mention a false easting and northing and a TM projection.
I'm assuming TM means Transverse Mercator.
It's early 1967 data and doesn't mention AGD66 anywhere. However a some of
the reference docs mention measurements in yards and feet.

All of the historical analysis of the data that I can find dates back to
the early 1980's and late 1970's and these all assume AGD66.

I would like to be able to create a custom CRS that I can load the original
data into (or a smaller portion of it) to confirm that the data has been
transformed over the years correctly.

Is anyone familiar with pre-AGD66 projections in Australia and any idea how
I'd go down this road?

Thanks
Matt
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Re: [Qgis-user] Reading SEG-Y files

[Matt Boyd]

Hi Lester,
where's the seg-y importer located? I haven't been able to find it or a
reference to it.

Matt


On Tue, Mar 8, 2016 at 1:52 AM, Lester Anderson 
wrote:

> Hello,
>
> I have just downloaded v2.14 and wanted to test the SEG-Y import. This
> all works fine for displaying the line as a series of points in a map,
> but is it actually possible to plot the seismic trace itself?
>
> Thanks
> Lester
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[Qgis-user] raster image to grid

[Matt Boyd]

Hi QGISers,
I've got an RGB image in tiff & png format, just a scan of a paper map that
represents a grid with an arbitrarily defined colour scale. Somethign like
orange red=700 to blue = 1200. There are also a number of other issues with
the image, it's a bit speckled, there are black contours etc.

I'm hunting for a way to turn the grid into something I can do work on
(this would save me having to recreate the data that the image came from)
by work I mean calculations on the numbers that the colours represent.

I don't need it super accurate but I'm struggling to work out what sort of
words I should be googling.

Does anyone have any ideas?

Thanks
Matt
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Re: [Qgis-user] Problem managing data

[Matt Boyd]

I've done something like this in the distant past.
Put data into a postgis database.
Link excel to the database.

That's the basics, there are a few details I don't have time to dig out at
the moment. If you haven't figured it out in a couple of weeks when I'm
back at my desk let me know and I'll see what I can put together.

Matt
On 28 Dec 2015 10:36 pm, "Siki Zoltan"  wrote:

> Dear Eva,
>
> AFAIK there is no direct solution to edit ods/xls/xlsx files from QGIS.
> There are two possible scenarios:
> 1. Edit your speadseet data in Libre|Open|MS office and open it in QGIS
> and join it to your spatial data. If your spreadsheet is open in both QGIS
> and Excel it can cause trouble.
>
> 2. Open you spreadsheet in QGIS and save as a QGIS editable format (e.g.
> dbf, sqlite) and edit these data. If you need again these data in a
> spreadsheet convert it back (probably through csv format).
>
> Hope it helps you,
>
> Zoltan
>
> On Mon, 28 Dec 2015, Eva Mosquera wrote:
>
> Hello everybody!I need to use the data I have in my shpfile in qgis in
>> excel. I need an excel spreadsheet that is able by itself to keep updated
>> with the data changes in qgis. And I don't know how to do this.
>> I'm trying to import the database (dbf) in excel but I have problems with
>> the type and characteristics...
>> Thank you very much
>>
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Re: [Qgis-user] postgis/gresql views

[Matt Boyd]

Thanks, I'm surprised as well, though each time the qgis window refreshes
the values change, so it's not quite!


On Thu, Dec 10, 2015 at 2:32 PM, Brent Wood  wrote:

> You want to select by date but you don't have a date to select on - just
> the interval between dates.
>
> If you want individual day based data, you'll need to specify an absolute
> date somewhere. You could use generate_series to create a table with dates
> from min start to max end dates, then join to that where date between
> start_date and end_date.
>
> So for every date in the interval for that record, there will be a record
> in the view... select by date in QGIS to see the data.
>
> You can either use an expression in QGIS to join columns to make the
> label, or concatenate them in the SQL to form a new column called, say,
> label, like:
>
>
> select ...
> ...
> name::':'::zone::' '::value as label
> from
> ...;
>
> I'm surprised your view works - you have two columns called name, you only
> need one of them.
>
>
> Cheers,
>
>Brent
>
>
> --
> *From:* Matt Boyd 
> *To:* Brent Wood 
> *Cc:* qgis-user 
> *Sent:* Thursday, December 10, 2015 3:42 PM
> *Subject:* Re: [Qgis-user] postgis/gresql views
>
> Hi Brent,
> my problem at the moment is SQL based I think, it's been a while and I was
> never that good at it.
> table1 has the geometry.
> table2 has the data
>
> for each location (name) there are multiple zones and multiple dates in
> the data table.
> So, a join on name gives
> name1|zone1|date1|volume1
> name1|zone2|date2|volume2
> name1|zone1|date2|volume3
>
> all with (I think) a working geometry
> Which are all valid results.
>
> However, when I go to display the results as labels in QGIS I can only see
> one result at a time. Ideally I'd to be able to separate them by date
> name1 (as at x day)
> zone1:volume1,
> zone2:volume2,
>
> I'm basically having trouble creating a single combined string from the
> SQL that I can use as a label.
>
> My view create script is below.
>
> CREATE OR REPLACE VIEW joined_table2_locations AS
>  SELECT table1.id,
> table1.geom,
> table1.name,
> table1.type,
> table2.name,
> table2.zone,
> table2.date_from,
> table2.date_to,
> table2.volume,
> table2.key_colum
>FROM table1
>  JOIN table2 ON table1.name::text = table2.name;
>
>
>
>
>
> On Thu, Dec 10, 2015 at 3:36 AM, Brent Wood  wrote:
>
> Hi Matt,
>
> What is the actual SQL you use to create the view?
> Something like:
> create view v_geo as
> select tab1.location,
>tab1.zone,
>tab1.date,
>tab1.value,
>tab2.geom
> from tab1, tab2
> where tab1.location=tab2.location;
>
> Then do a
> select * from v_geo order by location, zone, date;
>
> To check the records are as expected, before you try to open in QGIS. Also
> note that ideally you should include a integer primary key to clearly
> identify each record uniquely.
>
> eg:
> alter table tab1 add column id serial primary key;
> and include this id column in the view.
>
> You have not described the relationship between zones & locations. My
> assumption would be that locations are point features & zones represent
> polygons that the locations lie within, but this doesn't make sense with
> your example - "for all zones in location"
>
> It is also unclear whether you want to view categorised data in QGIS, or
> create Postgis views in Postgis from QGIS:
> "Ideally I'd like to be able to create labels and views from within qgis
> ..."
>
> Unless I understand your problem better, I can't offer useful advice.
>
> Cheers
>
> Brent Wood
>
>
> --
> *From:* Matt Boyd 
> *To:* qgis-user 
> *Sent:* Wednesday, December 9, 2015 7:08 PM
> *Subject:* [Qgis-user] postgis/gresql views
>
> Hi QGISers.
> I'm trying to work out how to display some geological data on map.
> Basically
> Table x;
> location1 | zone1 | date1 | value1
> location1 | zone1 | date2 | value2
> continued with variations in location/zone etc..
>
> spatial table
> geometry Column | location1
>
>
> I create a view in postgresql using the location as the common column.
> However, when I try to display my data, zone2 is shown with value1 and I
> can't work out how to get 2 values and 2 zones to display at a time.
>
> All the data is there and shown correctly in the combined attributes
> table, however labels don't show correctly.
>
&g

Re: [Qgis-user] postgis/gresql views

[Matt Boyd]

Hi Brent,

my problem at the moment is SQL based I think, it's been a while and I was
never that good at it.

table1 has the geometry.

table2 has the data


for each location (name) there are multiple zones and multiple dates in the
data table.

So, a join on name gives

name1|zone1|date1|volume1

name1|zone2|date2|volume2

name1|zone1|date2|volume3


all with (I think) a working geometry

Which are all valid results.


However, when I go to display the results as labels in QGIS I can only see
one result at a time. Ideally I'd to be able to separate them by date

name1 (as at x day)

zone1:volume1,

zone2:volume2,


I'm basically having trouble creating a single combined string from the SQL
that I can use as a label.


My view create script is below.


CREATE OR REPLACE VIEW joined_table2_locations AS

 SELECT table1.id,

table1.geom,

table1.name,

table1.type,

table2.name,

table2.zone,

table2.date_from,

table2.date_to,

table2.volume,

table2.key_colum

   FROM table1

 JOIN table2 ON table1.name::text = table2.name;




On Thu, Dec 10, 2015 at 3:36 AM, Brent Wood  wrote:

> Hi Matt,
>
> What is the actual SQL you use to create the view?
> Something like:
> create view v_geo as
> select tab1.location,
>tab1.zone,
>tab1.date,
>tab1.value,
>tab2.geom
> from tab1, tab2
> where tab1.location=tab2.location;
>
> Then do a
> select * from v_geo order by location, zone, date;
>
> To check the records are as expected, before you try to open in QGIS. Also
> note that ideally you should include a integer primary key to clearly
> identify each record uniquely.
>
> eg:
> alter table tab1 add column id serial primary key;
> and include this id column in the view.
>
> You have not described the relationship between zones & locations. My
> assumption would be that locations are point features & zones represent
> polygons that the locations lie within, but this doesn't make sense with
> your example - "for all zones in location"
>
> It is also unclear whether you want to view categorised data in QGIS, or
> create Postgis views in Postgis from QGIS:
> "Ideally I'd like to be able to create labels and views from within qgis
> ..."
>
> Unless I understand your problem better, I can't offer useful advice.
>
> Cheers
>
> Brent Wood
>
>
> --
> *From:* Matt Boyd 
> *To:* qgis-user 
> *Sent:* Wednesday, December 9, 2015 7:08 PM
> *Subject:* [Qgis-user] postgis/gresql views
>
> Hi QGISers.
> I'm trying to work out how to display some geological data on map.
> Basically
> Table x;
> location1 | zone1 | date1 | value1
> location1 | zone1 | date2 | value2
> continued with variations in location/zone etc..
>
> spatial table
> geometry Column | location1
>
>
> I create a view in postgresql using the location as the common column.
> However, when I try to display my data, zone2 is shown with value1 and I
> can't work out how to get 2 values and 2 zones to display at a time.
>
> All the data is there and shown correctly in the combined attributes
> table, however labels don't show correctly.
>
> Ideally I'd like to be able to create labels and views from within qgis
> using functions (eg, for all zones in location1, what is the sum of the
> values).
>
> I've only been at this a couple of hours this afternoon but thought I'd
> check here in case there's a simpler solution than the one I'm heading
> towards.
>
> Thanks
> Matt
>
>
>
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[Qgis-user] postgis/gresql views

[Matt Boyd]

Hi QGISers.
I'm trying to work out how to display some geological data on map.
Basically
Table x;
location1 | zone1 | date1 | value1
location1 | zone1 | date2 | value2
continued with variations in location/zone etc..

spatial table
geometry Column | location1


I create a view in postgresql using the location as the common column.
However, when I try to display my data, zone2 is shown with value1 and I
can't work out how to get 2 values and 2 zones to display at a time.

All the data is there and shown correctly in the combined attributes table,
however labels don't show correctly.

Ideally I'd like to be able to create labels and views from within qgis
using functions (eg, for all zones in location1, what is the sum of the
values).

I've only been at this a couple of hours this afternoon but thought I'd
check here in case there's a simpler solution than the one I'm heading
towards.

Thanks
Matt
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Re: [Qgis-user] Saving qgs project file takes forever on VPN - no problem with data

[Matt Boyd]

I'm pretty sure there's a lockfile that stops you from doing that. Also,
I've found most layers (shapefiles in particular) are locked so they can't
be edited by other applications while qgis has them.

Matt
On 15 Sep 2015 19:58, "Michael.Dodd"  wrote:

And what happens if more than one person at once tries to edit the project
on the server. There are 3 people all working on one project, we plan to do
it in turns, what happens if we make a mistake and try to open the main
project or edit some of the layers on the server two people at the same
time via vpn (we are physically in different parts of the country).

From: qgis-user-boun...@lists.osgeo.org [qgis-user-boun...@lists.osgeo.org]
on behalf of magerlin [m...@ramboll.dk]
Sent: Tuesday, September 15, 2015 10:23 AM
To: qgis-user@lists.osgeo.org
Subject: Re: [Qgis-user] Saving qgs project file takes forever on VPN - no
problem with data

Just a minute ago I edited my post by adding that AutoSaver is just as slow
:-(



-
Regards Morten

Currently using Qgis 2.10.1 (OSGeo4),
Windows 7, 64bit
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Re: [Qgis-user] Blending layers question

[Matt Boyd]

Thanks Nicolas,
yes, I'm aware of those properties. What I'm trying to work out is how QGIS
does this so I can use it outside of QGIS in another program. Some pointers
to the sort of questions I should be asking google on transparency would be
handy.

Thanks

On Thu, Sep 10, 2015 at 10:33 AM, Nicolas Cadieux <
nicolas.cadi...@archeotec.ca> wrote:

> Hi,
>
> In your raster properties, you can render layers using various methods
> like add, multiply...  It works very well.  Same options are available for
> vector layer and objects.
>
> Nicolas Cadieux M.Sc.
> Les Entreprises Archéotec inc.
> 8548, rue Saint-Denis Montréal H2P 2H2
> Téléphone: 514.381.5112  Fax: 514.381.4995
> www.archeotec.ca
> On Sep 9, 2015 7:51 PM, "Matt Boyd [via OSGeo.org]" <[hidden email]
> <http:///user/SendEmail.jtp?type=node&node=5223435&i=0>> wrote:
>
> Hi Group,
> this is possibly one of those questions about a question. I'd like to
> create some blended layers that look the same as layers in QGIS with
> transparency applied.
> I've another application that my data lives in and they supply a
> calculator that's able to do some fairly reasonable maths on different
> grids and other types of data.
>
> How does QGIS do transparency, and can I use those equations / method
> elsewhere.
>
> Thanks
> Matt
>
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[Qgis-user] Blending layers question

[Matt Boyd]

Hi Group,
this is possibly one of those questions about a question. I'd like to
create some blended layers that look the same as layers in QGIS with
transparency applied.
I've another application that my data lives in and they supply a calculator
that's able to do some fairly reasonable maths on different grids and other
types of data.

How does QGIS do transparency, and can I use those equations / method
elsewhere.

Thanks
Matt
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Re: [Qgis-user] Call for release name suggestions 2015

[Matt Boyd]

I think the G in QGIS is emphasised nicely by using place names.
The current selection method of place names is also good as it recognises
contributions to the project in a discrete wsy.
I'm not so keen on something as clinical as elements.

Matt
On 31 Aug 2015 3:29 am, "Anita Graser"  wrote:

> Dear QGIS community,
>
> As you might know, given our new release cycle with three releases a year,
> we are sooner or later going to run out of release names based on developer
> meeting locations. This is why I would like to remind you to suggest
> release names.
>
> If you have been hosting QGIS user meetings or if you have founded a user
> group, why not suggest the meeting/foundling location?
>
> Here's a short description of what is needed to make a suggestion:
>
> -
>
> CALL for QGIS RELEASE NAME SUGGESTIONS
>
> The following rules apply:
> - The suggestion should be the name of a place.
> - The suggestion must not be the name of a software product. (Please try
> to do some Google searches before submitting the suggestion.)
> - Each suggestion must come with a suitable map image for splash design.
> (Make sure that we have the rights to use the image. Since the splash is
> also printed in our user guide, a minimum resolution of 3000x2000 px is
> necessary.)
> - Locations of developer meetings have priority.
>
> Submission format: Send an email with a short description of your
> suggestion and a link to a ZIP file containing the map image(s) to
> anitagra...@gmx.at
>
> -
>
> Best wishes,
> Anita
>
>
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[Qgis-user] isomap / zmap grids show nan as values

[Matt Boyd]

Hi QGISers,
I've a bit of a problem with some grids that are created in some other
software. They load in the correct place but the values aren't read
correctly.
THe format is isomap z. Though I've also tried selecting the gxf format
with the same result.

I'm assuming it's something to do with how the other software writes the
grid, I occasionally get errors about gdal expecting an X or Y value but
there being something else, the difference is usually quite small (0.1 or
something like that).

My workaround has been to load grid as XYZ and then re-grid the data in
qgis. This is a little slow.

Has anyone got any tips?

Thanks
Matt
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Re: [Qgis-user] Hydrology

[Matt Boyd]

Thanks Lene,
that was great, very helpful. I was attempting to follow this

http://qgissextante.blogspot.com.au/2013/01/hydrology-analysis-with-taudem.html

but I had some problems finding the taudem commands.

Matt

On Fri, Aug 14, 2015 at 8:14 PM, Lene Fischer  wrote:

> Hi Matt,
>
> Just finished my lessons at this minute – in Hydrology J
>
>
>
> We use DTM
>
> Create:
>
> ·   Hillshade with factor 2
>
> ·   Use Fill Sinks (Wang& Lui) on DTM
>
> ·   Create a bluespot in Rastercalculator FilledDEM – DTM. Style and
> set transparency to 0
>
> ·   Use Channelnetwork & Drainage Basin to create Watershed basins
> and Streams (– The factor is set to 5 – if you want a more dense
> streamnetwork use a smaller factor.)
> Style/Graduate the streams by the attribute ‘Order’. Style Categorize the
> Watershed Basins
>
>
>
> Hope these few lines can help J
>
> Regards
>
>
>
>
>
> *Lene Fischer*
>
> Associate Professor
>
>
>
> *Department of Geosciences and Natural Resource Management*
>
> University of Copenhagen
>
>
>
> MOB +45 40115084
>
> l...@ign.ku.dk
>
>
>
>
>
> [image: cid:image001.gif@01D03029.2F3EC6A0]
>
>
>
>
>
>
>
> *Fra:* qgis-user-boun...@lists.osgeo.org [mailto:
> qgis-user-boun...@lists.osgeo.org] *På vegne af *Matt Boyd
> *Sendt:* 14. august 2015 10:04
> *Til:* qgis-user
> *Emne:* [Qgis-user] Hydrology
>
>
>
> Hi List,
>
> I need to work out some channels and hydrology things from a topography
> DEM. I've done a little bit of this before but if there's a how to or a
> tutorial on the correct process / work flow that someone could point me at
> I'd appreciate it.
>
>
>
> Basically I need to work out that if I have rainfall in an certain area,
> how much of it makes its way through to another area (using a DEM) and the
> path it takes. It doesn't need to be precisely quantified, just an idea on
> preferred pathways and the end result.
>
>
>
> Thanks
>
> Matt
>
>
>
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[Qgis-user] Hydrology

[Matt Boyd]

Hi List,
I need to work out some channels and hydrology things from a topography
DEM. I've done a little bit of this before but if there's a how to or a
tutorial on the correct process / work flow that someone could point me at
I'd appreciate it.

Basically I need to work out that if I have rainfall in an certain area,
how much of it makes its way through to another area (using a DEM) and the
path it takes. It doesn't need to be precisely quantified, just an idea on
preferred pathways and the end result.

Thanks
Matt
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[Qgis-user] Raster display options, color rendering, blending mode

[Matt Boyd]

Hi QGISers,
I was getting some odd results when adjusting this option. It took me a
little while to realise that the background color was being used in the
rendering process. This is something I can work around until I need to use
a black background.

Is there a way to make the background color not interact with any visible
layers?

Thanks
Matt
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[Qgis-user] Automated / saved work flows?

[Matt Boyd]

Hi QGISers,
I'm wondering if there's a plug in or some way to save a series of steps in
QGIS.
One way I can think of doing it is to simply save the text / command line
part of the gdal commands into a text / batch file which I could then use
to string a series of command together, using the output from the first as
the input to the second and so on.

I've used programs that do this sort of thing more or less using a GUI. Is
there anything similar for QGIS?

Regards
Matt
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Re: [Qgis-user] Merging Shapefiles on Top of Each Other

[Matt Boyd]

Hi Tom,
Have a look at some of the QGIS tutorials (google or the QGIS website
shoudl have some). It sounds like you just need to overlay the layers in
the correct order, merge generally means something else.
You can drag / move the layers around / up / down in the layers window.
Generally from top to bottom, points, lines, polygons. There is also an
option to give each layer a level of transparency.

On Thu, Jun 18, 2015 at 8:59 PM, Tom Faro 
wrote:

>
>
>  I have been having some trouble with merging two shapefiles – one is a
> map of all sectors in the UK and one is a map of all motorways in the UK. I
> have successfully merged them by putting them both as polygons. However,
> when I fill in the sectors with different colours the road map disappears.
> The same happens when I use the same shapefile in other software.
>
>
>
> Is it possible to merge them so that the roads are always on top? Any Help
> with this matter would be greatly appreciated.
>
> Many Thanks,
> Tom
>
>
>
>
> [image: Environment]
> --
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> Zenith Insurance plc and is not an Agent of Zenith Insurance plc. Zenith
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[Qgis-user] Zmap problems

[Matt Boyd]

Hi QGISers
I've got a misbehaving application that exports Zmap formatted grids but
gdal (& QGIS) doesn't recognise them.
In QGIS the gird is loaded in the right place, but with incorrect values
(all way off scale compared to whats in the file.
If I try to use gdal_translate then I get

 band 1: IReadBlock failed at X offset 0, Y offset 0

Any tips?

Matt
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Re: [Qgis-user] Fwd: QGIS crash on loading projects

[Matt Boyd]

I got it sorted out Phew...
I loaded up event viewer (didn't even know this existed) and in the log,
associated with QGIS failure was this line...

Faulting module path: C:\Windows\system32\spool\DRIVERS\x64\3\RIC63DJ.DLL

It's part of the Ricoh Print drivers and the printers are the least of my
problems this week so I deleted that file and yay print composer works
now!!! A very specific problem on my machine only.

Thanks again everyone.

Matt


On Fri, Jan 30, 2015 at 2:56 PM, Matt Boyd  wrote:

> Thanks all,
> I've tried all the suggestions and it looks like it's something on just
> this one PC. I managed to get one of the old projects to load by opening it
> on another PC and removing all of the saved Print Composers.
>
> One again, thanks for all the help, when I sort it out I'll be sure to
> post something.
>
> Thanks again
> matt
>
>
> On Fri, Jan 30, 2015 at 2:24 AM, Andre Joost 
> wrote:
>
>> Am 29.01.2015 um 08:38 schrieb Richard Duivenvoorde:
>>
>>
>>> and if you use both the optionspath parameter, AND removed your .qgis2
>>> directory with all stuff in it, then it should really be an installation
>>> or dll-hell problem.
>>>
>>> And please also try it on another computer,
>>>
>>
>> ... and give the 32-bit version from OSGeo4W or standalone a try. They
>> can live happily next to a 64-bit install on Windows 7 64-bit.
>>
>> HTH,
>> André Joost
>>
>>
>>
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Re: [Qgis-user] Fwd: QGIS crash on loading projects

[Matt Boyd]

Thanks all,
I've tried all the suggestions and it looks like it's something on just
this one PC. I managed to get one of the old projects to load by opening it
on another PC and removing all of the saved Print Composers.

One again, thanks for all the help, when I sort it out I'll be sure to post
something.

Thanks again
matt


On Fri, Jan 30, 2015 at 2:24 AM, Andre Joost 
wrote:

> Am 29.01.2015 um 08:38 schrieb Richard Duivenvoorde:
>
>
>> and if you use both the optionspath parameter, AND removed your .qgis2
>> directory with all stuff in it, then it should really be an installation
>> or dll-hell problem.
>>
>> And please also try it on another computer,
>>
>
> ... and give the 32-bit version from OSGeo4W or standalone a try. They can
> live happily next to a 64-bit install on Windows 7 64-bit.
>
> HTH,
> André Joost
>
>
>
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Re: [Qgis-user] Fwd: QGIS crash on loading projects

[Matt Boyd]

No, it's still crashing.

On Thu, Jan 29, 2015 at 1:49 PM, Nathan Woodrow  wrote:

> Ok give this a go.
>
> In the install folder for QGIS there is a file called OSGeo4w.bat. Run
> that and type:
>
> qgis --optionspath "C:\temp\qgis" --configpath "C:\temp\qgis"
>
> Both those options take a folder path and will save the settings there.
> These will create a new user home and settings location in temp\qgis.  This
> is good for seeing if there is a busted setting in your registry for QGIS.
>
> Run that command and see if it still crashes.
>
> - Nathan
>
> On Thu Jan 29 2015 at 12:44:42 PM Matt Boyd  wrote:
>
>> Hi Nathan,
>> I've done this with a test project and as soon as open a map composer
>> QGIS crashes.
>> Open QGIS into new blank project
>> Open print composer, select create new print composer window, press the
>> OK button
>> Crash
>>
>> Open QGIS into new blank project
>> adjust projection etc, add layers to project
>> Open print composer, select create new print composer window, press the
>> OK button
>> Crash
>>
>> Open older QGIS project with previously created map windows /
>> compositions.
>> layers start to load
>> Crash.
>>
>> Seems like my problem is the print composer and is unrelated to any of
>> the projects I have saved. I am able to open them on another PC.
>>
>> I've tried a complete uninstall and reinstall of QGIS and all of the
>> OSGEO4W64 components, deleting my .qgis user directory. (this took some
>> figuring out as the uninstall isn't a transparent process)
>>
>> Standalone install of QGIS 2.6.1 from website download.
>>
>> Standalone install of QGIS 2.4 from website download.
>>
>> In none of the above cases am I able to get the print composer to start.
>> I really don't want to have to reinstall windows.
>>
>> Thanks
>> Matt
>>
>>
>> On Thu, Jan 29, 2015 at 1:29 PM, Nathan Woodrow 
>> wrote:
>>
>>> Hey Matt,
>>>
>>> What kind of layers do you have in the project?
>>>
>>> On Thu, 29 Jan 2015 12:05 pm Matt Boyd  wrote:
>>>
>>>> This is getting frustrating, would this be worth contacting the devs
>>>> about? I haven't made any progress with this issue.
>>>>
>>>> On Wed, Jan 28, 2015 at 10:24 AM, Matt Boyd 
>>>> wrote:
>>>>
>>>>> Still no luck, I've generated a log file of a crash that I don't see
>>>>> anything useful in.
>>>>>
>>>>> http://pastebin.com/UhuvQA4k
>>>>>
>>>>>
>>>>> On Wed, Jan 28, 2015 at 8:52 AM, Matt Boyd 
>>>>> wrote:
>>>>>
>>>>>> Thanks for all the help everyone.
>>>>>> I think I've narrowed it down to something with Print Composer. As
>>>>>> soon as I try to start a new print composer window the project crashes.
>>>>>> This happens even with newly created projects.
>>>>>> The problem with other projects loading must be because most of them
>>>>>> have a print composer window to open.
>>>>>>
>>>>>> Now more digging.
>>>>>> Thanks again.
>>>>>>
>>>>>> On Wed, Jan 28, 2015 at 12:01 AM, Nicolas Cadieux <
>>>>>> nicolas.cadi...@archeotec.ca> wrote:
>>>>>>
>>>>>>> Hi,
>>>>>>> Have you tried to open the projects with a different computer?  Send
>>>>>>> a simple project along and maybe we can look at it.  Are all new 
>>>>>>> projects
>>>>>>> working perfectly?
>>>>>>>
>>>>>>> Nicolas Cadieux M.Sc.
>>>>>>> Les Entreprises Archéotec inc.
>>>>>>> 8548, rue Saint-Denis Montréal H2P 2H2
>>>>>>> Téléphone: 514.381.5112  Fax: 514.381.4995
>>>>>>> Le 2015-01-27 01:31, "Matt Boyd [via OSGeo.org]" <[hidden email]
>>>>>>> <http:///user/SendEmail.jtp?type=node&node=5183947&i=0>> a écrit :
>>>>>>>
>>>>>>> Complete reinstall third time lucky, QGIS runs. It still crashes
>>>>>>> when I try to open an older project so I'm back to where I was this 
>>>>>>> morning.
>>>>>>> I would really appreciate knowing if there is a log file generated
>>>>&g

Re: [Qgis-user] Fwd: QGIS crash on loading projects

[Matt Boyd]

Hi Nathan,
I've done this with a test project and as soon as open a map composer QGIS
crashes.
Open QGIS into new blank project
Open print composer, select create new print composer window, press the OK
button
Crash

Open QGIS into new blank project
adjust projection etc, add layers to project
Open print composer, select create new print composer window, press the OK
button
Crash

Open older QGIS project with previously created map windows / compositions.
layers start to load
Crash.

Seems like my problem is the print composer and is unrelated to any of the
projects I have saved. I am able to open them on another PC.

I've tried a complete uninstall and reinstall of QGIS and all of the
OSGEO4W64 components, deleting my .qgis user directory. (this took some
figuring out as the uninstall isn't a transparent process)

Standalone install of QGIS 2.6.1 from website download.

Standalone install of QGIS 2.4 from website download.

In none of the above cases am I able to get the print composer to start. I
really don't want to have to reinstall windows.

Thanks
Matt


On Thu, Jan 29, 2015 at 1:29 PM, Nathan Woodrow  wrote:

> Hey Matt,
>
> What kind of layers do you have in the project?
>
> On Thu, 29 Jan 2015 12:05 pm Matt Boyd  wrote:
>
>> This is getting frustrating, would this be worth contacting the devs
>> about? I haven't made any progress with this issue.
>>
>> On Wed, Jan 28, 2015 at 10:24 AM, Matt Boyd  wrote:
>>
>>> Still no luck, I've generated a log file of a crash that I don't see
>>> anything useful in.
>>>
>>> http://pastebin.com/UhuvQA4k
>>>
>>>
>>> On Wed, Jan 28, 2015 at 8:52 AM, Matt Boyd  wrote:
>>>
>>>> Thanks for all the help everyone.
>>>> I think I've narrowed it down to something with Print Composer. As soon
>>>> as I try to start a new print composer window the project crashes. This
>>>> happens even with newly created projects.
>>>> The problem with other projects loading must be because most of them
>>>> have a print composer window to open.
>>>>
>>>> Now more digging.
>>>> Thanks again.
>>>>
>>>> On Wed, Jan 28, 2015 at 12:01 AM, Nicolas Cadieux <
>>>> nicolas.cadi...@archeotec.ca> wrote:
>>>>
>>>>> Hi,
>>>>> Have you tried to open the projects with a different computer?  Send a
>>>>> simple project along and maybe we can look at it.  Are all new projects
>>>>> working perfectly?
>>>>>
>>>>> Nicolas Cadieux M.Sc.
>>>>> Les Entreprises Archéotec inc.
>>>>> 8548, rue Saint-Denis Montréal H2P 2H2
>>>>> Téléphone: 514.381.5112  Fax: 514.381.4995
>>>>> Le 2015-01-27 01:31, "Matt Boyd [via OSGeo.org]" <[hidden email]
>>>>> <http:///user/SendEmail.jtp?type=node&node=5183947&i=0>> a écrit :
>>>>>
>>>>> Complete reinstall third time lucky, QGIS runs. It still crashes when
>>>>> I try to open an older project so I'm back to where I was this morning.
>>>>> I would really appreciate knowing if there is a log file generated or
>>>>> how to create one?
>>>>>
>>>>> On Tue, Jan 27, 2015 at 4:05 PM, Matt Boyd <[hidden email]
>>>>> <http:///user/SendEmail.jtp?type=node&node=5183884&i=0>> wrote:
>>>>>
>>>>>
>>>>> On Tue, Jan 27, 2015 at 11:17 AM, Nicolas Cadieux <[hidden email]
>>>>> <http:///user/SendEmail.jtp?type=node&node=5183884&i=1>> wrote:
>>>>>
>>>>> Hi,
>>>>>
>>>>> Personally this is what I would do.
>>>>>
>>>>> Completely purges Qgis from your system.  (Delete plugin directories,
>>>>> AND the Qgis registry keys.) Reboot.
>>>>>
>>>>> I would install Qgis 2.6.1 using the OSGEO install.
>>>>>
>>>>> I followed these steps. My install was already done via osge064w and
>>>>> uninstalling was a little tricky.
>>>>> I removed the directories and the registry entries.
>>>>>
>>>>> I then reinstalled QGIS via the express installer.
>>>>>
>>>>> QGIS wouldn't start giving an error about jvm.dll missing from my
>>>>> computer.
>>>>>
>>>>> I manually selected the java install via the advanced option, jvm is
>>>>> installed and in a subfolder in C:\osgeo4w64
>>

Re: [Qgis-user] Fwd: QGIS crash on loading projects

[Matt Boyd]

This is getting frustrating, would this be worth contacting the devs about?
I haven't made any progress with this issue.

On Wed, Jan 28, 2015 at 10:24 AM, Matt Boyd  wrote:

> Still no luck, I've generated a log file of a crash that I don't see
> anything useful in.
>
> http://pastebin.com/UhuvQA4k
>
>
> On Wed, Jan 28, 2015 at 8:52 AM, Matt Boyd  wrote:
>
>> Thanks for all the help everyone.
>> I think I've narrowed it down to something with Print Composer. As soon
>> as I try to start a new print composer window the project crashes. This
>> happens even with newly created projects.
>> The problem with other projects loading must be because most of them have
>> a print composer window to open.
>>
>> Now more digging.
>> Thanks again.
>>
>> On Wed, Jan 28, 2015 at 12:01 AM, Nicolas Cadieux <
>> nicolas.cadi...@archeotec.ca> wrote:
>>
>>> Hi,
>>> Have you tried to open the projects with a different computer?  Send a
>>> simple project along and maybe we can look at it.  Are all new projects
>>> working perfectly?
>>>
>>> Nicolas Cadieux M.Sc.
>>> Les Entreprises Archéotec inc.
>>> 8548, rue Saint-Denis Montréal H2P 2H2
>>> Téléphone: 514.381.5112  Fax: 514.381.4995
>>> Le 2015-01-27 01:31, "Matt Boyd [via OSGeo.org]" <[hidden email]
>>> <http:///user/SendEmail.jtp?type=node&node=5183947&i=0>> a écrit :
>>>
>>> Complete reinstall third time lucky, QGIS runs. It still crashes when I
>>> try to open an older project so I'm back to where I was this morning.
>>> I would really appreciate knowing if there is a log file generated or
>>> how to create one?
>>>
>>> On Tue, Jan 27, 2015 at 4:05 PM, Matt Boyd <[hidden email]
>>> <http:///user/SendEmail.jtp?type=node&node=5183884&i=0>> wrote:
>>>
>>>
>>> On Tue, Jan 27, 2015 at 11:17 AM, Nicolas Cadieux <[hidden email]
>>> <http:///user/SendEmail.jtp?type=node&node=5183884&i=1>> wrote:
>>>
>>> Hi,
>>>
>>> Personally this is what I would do.
>>>
>>> Completely purges Qgis from your system.  (Delete plugin directories,
>>> AND the Qgis registry keys.) Reboot.
>>>
>>> I would install Qgis 2.6.1 using the OSGEO install.
>>>
>>> I followed these steps. My install was already done via osge064w and
>>> uninstalling was a little tricky.
>>> I removed the directories and the registry entries.
>>>
>>> I then reinstalled QGIS via the express installer.
>>>
>>> QGIS wouldn't start giving an error about jvm.dll missing from my
>>> computer.
>>>
>>> I manually selected the java install via the advanced option, jvm is
>>> installed and in a subfolder in C:\osgeo4w64
>>>
>>> I suspect it's a path problem, working on this.
>>>
>>> I would make sure that all mapped drive are properly remapped with the
>>> proper passwords, I would install the open layer plugin and wms or other
>>> data servers. Make sure the symbols are reinstalled if you had new ones and
>>> also make sure the .svg symbol images are well mapped.
>>>
>>> If the problem persists, I would repurge Qgis, install and older version
>>> and try again.
>>>
>>> Finally, i would then start looking at the project files with a text
>>> editor to try to  understand the problem. I is likely the crash is cause by
>>> a layer that cannot be opened and that this layer depends on a plugin like
>>> openlayer, a mapped drive, wms servers... That would be my guess.
>>>
>>> Nicolas Cadieux M.Sc.
>>> Les Entreprises Archéotec inc.
>>> 8548, rue Saint-Denis Montréal H2P 2H2
>>> Téléphone: >> target="_blank">514.381.5112  Fax: 514.381.4995
>>> Le 2015-01-26 18:16, "Matt Boyd [via OSGeo.org]" <[hidden email]
>>> <http:///user/SendEmail.jtp?type=node&node=5183862&i=0>> a écrit :
>>> Thanks Lene,
>>> I tried that on a 3 projects this morning with no change to the
>>> behaviour. I've had 2.6.1 for a while now and these projects opened in that
>>> early last week.
>>> I've also tried loading older projects that are still in 2.0, 2.2, and
>>> 2.4 format and the same thing happens.
>>>
>>> Most of my projects are on a network drive and I've managed to get a
>>> step further by copying those project files to

Re: [Qgis-user] Fwd: QGIS crash on loading projects

[Matt Boyd]

Still no luck, I've generated a log file of a crash that I don't see
anything useful in.

http://pastebin.com/UhuvQA4k


On Wed, Jan 28, 2015 at 8:52 AM, Matt Boyd  wrote:

> Thanks for all the help everyone.
> I think I've narrowed it down to something with Print Composer. As soon as
> I try to start a new print composer window the project crashes. This
> happens even with newly created projects.
> The problem with other projects loading must be because most of them have
> a print composer window to open.
>
> Now more digging.
> Thanks again.
>
> On Wed, Jan 28, 2015 at 12:01 AM, Nicolas Cadieux <
> nicolas.cadi...@archeotec.ca> wrote:
>
>> Hi,
>> Have you tried to open the projects with a different computer?  Send a
>> simple project along and maybe we can look at it.  Are all new projects
>> working perfectly?
>>
>> Nicolas Cadieux M.Sc.
>> Les Entreprises Archéotec inc.
>> 8548, rue Saint-Denis Montréal H2P 2H2
>> Téléphone: 514.381.5112  Fax: 514.381.4995
>> Le 2015-01-27 01:31, "Matt Boyd [via OSGeo.org]" <[hidden email]
>> <http:///user/SendEmail.jtp?type=node&node=5183947&i=0>> a écrit :
>>
>> Complete reinstall third time lucky, QGIS runs. It still crashes when I
>> try to open an older project so I'm back to where I was this morning.
>> I would really appreciate knowing if there is a log file generated or how
>> to create one?
>>
>> On Tue, Jan 27, 2015 at 4:05 PM, Matt Boyd <[hidden email]
>> <http:///user/SendEmail.jtp?type=node&node=5183884&i=0>> wrote:
>>
>>
>> On Tue, Jan 27, 2015 at 11:17 AM, Nicolas Cadieux <[hidden email]
>> <http:///user/SendEmail.jtp?type=node&node=5183884&i=1>> wrote:
>>
>> Hi,
>>
>> Personally this is what I would do.
>>
>> Completely purges Qgis from your system.  (Delete plugin directories, AND
>> the Qgis registry keys.) Reboot.
>>
>> I would install Qgis 2.6.1 using the OSGEO install.
>>
>> I followed these steps. My install was already done via osge064w and
>> uninstalling was a little tricky.
>> I removed the directories and the registry entries.
>>
>> I then reinstalled QGIS via the express installer.
>>
>> QGIS wouldn't start giving an error about jvm.dll missing from my
>> computer.
>>
>> I manually selected the java install via the advanced option, jvm is
>> installed and in a subfolder in C:\osgeo4w64
>>
>> I suspect it's a path problem, working on this.
>>
>> I would make sure that all mapped drive are properly remapped with the
>> proper passwords, I would install the open layer plugin and wms or other
>> data servers. Make sure the symbols are reinstalled if you had new ones and
>> also make sure the .svg symbol images are well mapped.
>>
>> If the problem persists, I would repurge Qgis, install and older version
>> and try again.
>>
>> Finally, i would then start looking at the project files with a text
>> editor to try to  understand the problem. I is likely the crash is cause by
>> a layer that cannot be opened and that this layer depends on a plugin like
>> openlayer, a mapped drive, wms servers... That would be my guess.
>>
>> Nicolas Cadieux M.Sc.
>> Les Entreprises Archéotec inc.
>> 8548, rue Saint-Denis Montréal H2P 2H2
>> Téléphone: > target="_blank">514.381.5112  Fax: 514.381.4995
>> Le 2015-01-26 18:16, "Matt Boyd [via OSGeo.org]" <[hidden email]
>> <http:///user/SendEmail.jtp?type=node&node=5183862&i=0>> a écrit :
>> Thanks Lene,
>> I tried that on a 3 projects this morning with no change to the
>> behaviour. I've had 2.6.1 for a while now and these projects opened in that
>> early last week.
>> I've also tried loading older projects that are still in 2.0, 2.2, and
>> 2.4 format and the same thing happens.
>>
>> Most of my projects are on a network drive and I've managed to get a step
>> further by copying those project files to a local drive. I then get the
>> "handle bad layers" dialog, then qgis crashes. I need to dig a little to
>> see if this is a problem in case someone has moved some of the layers the
>> dialog is referring to but this hasn't caused a crash before.
>>
>> Is this behaviour logged anywhere?
>>
>> Thanks
>> Mat
>>
>> On Tue, Jan 27, 2015 at 9:58 AM, Lene Fischer <[hidden email]
>> <http:///user/SendEmail.jtp?type=node&node=5183855&i=0>> wrote:
>>
>> Pleas

Re: [Qgis-user] Fwd: QGIS crash on loading projects

[Matt Boyd]

Thanks for all the help everyone.
I think I've narrowed it down to something with Print Composer. As soon as
I try to start a new print composer window the project crashes. This
happens even with newly created projects.
The problem with other projects loading must be because most of them have a
print composer window to open.

Now more digging.
Thanks again.

On Wed, Jan 28, 2015 at 12:01 AM, Nicolas Cadieux <
nicolas.cadi...@archeotec.ca> wrote:

> Hi,
> Have you tried to open the projects with a different computer?  Send a
> simple project along and maybe we can look at it.  Are all new projects
> working perfectly?
>
> Nicolas Cadieux M.Sc.
> Les Entreprises Archéotec inc.
> 8548, rue Saint-Denis Montréal H2P 2H2
> Téléphone: 514.381.5112  Fax: 514.381.4995
> Le 2015-01-27 01:31, "Matt Boyd [via OSGeo.org]" <[hidden email]
> <http:///user/SendEmail.jtp?type=node&node=5183947&i=0>> a écrit :
>
> Complete reinstall third time lucky, QGIS runs. It still crashes when I
> try to open an older project so I'm back to where I was this morning.
> I would really appreciate knowing if there is a log file generated or how
> to create one?
>
> On Tue, Jan 27, 2015 at 4:05 PM, Matt Boyd <[hidden email]
> <http:///user/SendEmail.jtp?type=node&node=5183884&i=0>> wrote:
>
>
> On Tue, Jan 27, 2015 at 11:17 AM, Nicolas Cadieux <[hidden email]
> <http:///user/SendEmail.jtp?type=node&node=5183884&i=1>> wrote:
>
> Hi,
>
> Personally this is what I would do.
>
> Completely purges Qgis from your system.  (Delete plugin directories, AND
> the Qgis registry keys.) Reboot.
>
> I would install Qgis 2.6.1 using the OSGEO install.
>
> I followed these steps. My install was already done via osge064w and
> uninstalling was a little tricky.
> I removed the directories and the registry entries.
>
> I then reinstalled QGIS via the express installer.
>
> QGIS wouldn't start giving an error about jvm.dll missing from my computer.
>
> I manually selected the java install via the advanced option, jvm is
> installed and in a subfolder in C:\osgeo4w64
>
> I suspect it's a path problem, working on this.
>
> I would make sure that all mapped drive are properly remapped with the
> proper passwords, I would install the open layer plugin and wms or other
> data servers. Make sure the symbols are reinstalled if you had new ones and
> also make sure the .svg symbol images are well mapped.
>
> If the problem persists, I would repurge Qgis, install and older version
> and try again.
>
> Finally, i would then start looking at the project files with a text
> editor to try to  understand the problem. I is likely the crash is cause by
> a layer that cannot be opened and that this layer depends on a plugin like
> openlayer, a mapped drive, wms servers... That would be my guess.
>
> Nicolas Cadieux M.Sc.
> Les Entreprises Archéotec inc.
> 8548, rue Saint-Denis Montréal H2P 2H2
> Téléphone:  target="_blank">514.381.5112  Fax: 514.381.4995
> Le 2015-01-26 18:16, "Matt Boyd [via OSGeo.org]" <[hidden email]
> <http:///user/SendEmail.jtp?type=node&node=5183862&i=0>> a écrit :
> Thanks Lene,
> I tried that on a 3 projects this morning with no change to the behaviour.
> I've had 2.6.1 for a while now and these projects opened in that early last
> week.
> I've also tried loading older projects that are still in 2.0, 2.2, and 2.4
> format and the same thing happens.
>
> Most of my projects are on a network drive and I've managed to get a step
> further by copying those project files to a local drive. I then get the
> "handle bad layers" dialog, then qgis crashes. I need to dig a little to
> see if this is a problem in case someone has moved some of the layers the
> dialog is referring to but this hasn't caused a crash before.
>
> Is this behaviour logged anywhere?
>
> Thanks
> Mat
>
> On Tue, Jan 27, 2015 at 9:58 AM, Lene Fischer <[hidden email]
> <http:///user/SendEmail.jtp?type=node&node=5183855&i=0>> wrote:
>
> Please first update to 2.6.1.
>
>
>
> If you have your crashed projects – you also have projects named with a
> .qgs~. Rename this project and delete the ~  and open it as usual.
>
> A lot of my students had the same problem last week – but only the ones
> who had forgotten to update to 2.6.1
>
> Hope this can help you.
>
> Regards
>
>
>
>
>
> *Lene Fischer*
>
> Associate Professor
>
>
>
> *Department of Geosciences and Natural Resource Management*
>
> University of Copenhagen
>
>
>
> MOB  value="+4540115084" ta

Re: [Qgis-user] Fwd: QGIS crash on loading projects

[Matt Boyd]

Complete reinstall third time lucky, QGIS runs. It still crashes when I try
to open an older project so I'm back to where I was this morning.
I would really appreciate knowing if there is a log file generated or how
to create one?

On Tue, Jan 27, 2015 at 4:05 PM, Matt Boyd  wrote:

>
>
> On Tue, Jan 27, 2015 at 11:17 AM, Nicolas Cadieux <
> nicolas.cadi...@archeotec.ca> wrote:
>
>> Hi,
>>
>> Personally this is what I would do.
>>
>> Completely purges Qgis from your system.  (Delete plugin directories, AND
>> the Qgis registry keys.) Reboot.
>>
>> I would install Qgis 2.6.1 using the OSGEO install.
>>
> I followed these steps. My install was already done via osge064w and
> uninstalling was a little tricky.
> I removed the directories and the registry entries.
>
> I then reinstalled QGIS via the express installer.
>
> QGIS wouldn't start giving an error about jvm.dll missing from my computer.
>
> I manually selected the java install via the advanced option, jvm is
> installed and in a subfolder in C:\osgeo4w64
>
> I suspect it's a path problem, working on this.
>
> I would make sure that all mapped drive are properly remapped with the
>> proper passwords, I would install the open layer plugin and wms or other
>> data servers. Make sure the symbols are reinstalled if you had new ones and
>> also make sure the .svg symbol images are well mapped.
>>
>> If the problem persists, I would repurge Qgis, install and older version
>> and try again.
>>
>> Finally, i would then start looking at the project files with a text
>> editor to try to  understand the problem. I is likely the crash is cause by
>> a layer that cannot be opened and that this layer depends on a plugin like
>> openlayer, a mapped drive, wms servers... That would be my guess.
>>
>> Nicolas Cadieux M.Sc.
>> Les Entreprises Archéotec inc.
>> 8548, rue Saint-Denis Montréal H2P 2H2
>> Téléphone: 514.381.5112  Fax: 514.381.4995
>> Le 2015-01-26 18:16, "Matt Boyd [via OSGeo.org]" <[hidden email]
>> <http:///user/SendEmail.jtp?type=node&node=5183862&i=0>> a écrit :
>>
>> Thanks Lene,
>> I tried that on a 3 projects this morning with no change to the
>> behaviour. I've had 2.6.1 for a while now and these projects opened in that
>> early last week.
>> I've also tried loading older projects that are still in 2.0, 2.2, and
>> 2.4 format and the same thing happens.
>>
>> Most of my projects are on a network drive and I've managed to get a step
>> further by copying those project files to a local drive. I then get the
>> "handle bad layers" dialog, then qgis crashes. I need to dig a little to
>> see if this is a problem in case someone has moved some of the layers the
>> dialog is referring to but this hasn't caused a crash before.
>>
>> Is this behaviour logged anywhere?
>>
>> Thanks
>> Mat
>>
>> On Tue, Jan 27, 2015 at 9:58 AM, Lene Fischer <[hidden email]
>> <http:///user/SendEmail.jtp?type=node&node=5183855&i=0>> wrote:
>>
>> Please first update to 2.6.1.
>>
>>
>>
>> If you have your crashed projects – you also have projects named with a
>> .qgs~. Rename this project and delete the ~  and open it as usual.
>>
>> A lot of my students had the same problem last week – but only the ones
>> who had forgotten to update to 2.6.1
>>
>> Hope this can help you.
>>
>> Regards
>>
>>
>>
>>
>>
>> *Lene Fischer*
>>
>> Associate Professor
>>
>>
>>
>> *Department of Geosciences and Natural Resource Management*
>>
>> University of Copenhagen
>>
>>
>>
>> MOB +45
>> 40115084
>>
>> [hidden email] <http:///user/SendEmail.jtp?type=node&node=5183855&i=1>
>>
>>
>>
>>
>>
>> [image: cid:image001.gif@01D03029.2F3EC6A0]
>>
>>
>>
>>
>>
>>
>>
>> *Fra:* [hidden email]
>> <http:///user/SendEmail.jtp?type=node&node=5183855&i=2> [mailto:[hidden
>> email] <http:///user/SendEmail.jtp?type=node&node=5183855&i=3>] *På
>> vegne af *Matt Boyd
>> *Sendt:* 26. januar 2015 23:29
>> *Til:* qgis-user
>> *Emne:* [Qgis-user] Fwd: QGIS crash on loading projects
>>
>>
>>
>> Just a bump to this question, does anyone know how to enable logging or
>> find the log file? I really don't want to have to re create all my project
>> files and I can't get 

Re: [Qgis-user] Fwd: QGIS crash on loading projects

[Matt Boyd]

On Tue, Jan 27, 2015 at 11:17 AM, Nicolas Cadieux <
nicolas.cadi...@archeotec.ca> wrote:

> Hi,
>
> Personally this is what I would do.
>
> Completely purges Qgis from your system.  (Delete plugin directories, AND
> the Qgis registry keys.) Reboot.
>
> I would install Qgis 2.6.1 using the OSGEO install.
>
I followed these steps. My install was already done via osge064w and
uninstalling was a little tricky.
I removed the directories and the registry entries.

I then reinstalled QGIS via the express installer.

QGIS wouldn't start giving an error about jvm.dll missing from my computer.

I manually selected the java install via the advanced option, jvm is
installed and in a subfolder in C:\osgeo4w64

I suspect it's a path problem, working on this.

I would make sure that all mapped drive are properly remapped with the
> proper passwords, I would install the open layer plugin and wms or other
> data servers. Make sure the symbols are reinstalled if you had new ones and
> also make sure the .svg symbol images are well mapped.
>
> If the problem persists, I would repurge Qgis, install and older version
> and try again.
>
> Finally, i would then start looking at the project files with a text
> editor to try to  understand the problem. I is likely the crash is cause by
> a layer that cannot be opened and that this layer depends on a plugin like
> openlayer, a mapped drive, wms servers... That would be my guess.
>
> Nicolas Cadieux M.Sc.
> Les Entreprises Archéotec inc.
> 8548, rue Saint-Denis Montréal H2P 2H2
> Téléphone: 514.381.5112  Fax: 514.381.4995
> Le 2015-01-26 18:16, "Matt Boyd [via OSGeo.org]" <[hidden email]
> <http:///user/SendEmail.jtp?type=node&node=5183862&i=0>> a écrit :
>
> Thanks Lene,
> I tried that on a 3 projects this morning with no change to the behaviour.
> I've had 2.6.1 for a while now and these projects opened in that early last
> week.
> I've also tried loading older projects that are still in 2.0, 2.2, and 2.4
> format and the same thing happens.
>
> Most of my projects are on a network drive and I've managed to get a step
> further by copying those project files to a local drive. I then get the
> "handle bad layers" dialog, then qgis crashes. I need to dig a little to
> see if this is a problem in case someone has moved some of the layers the
> dialog is referring to but this hasn't caused a crash before.
>
> Is this behaviour logged anywhere?
>
> Thanks
> Mat
>
> On Tue, Jan 27, 2015 at 9:58 AM, Lene Fischer <[hidden email]
> <http:///user/SendEmail.jtp?type=node&node=5183855&i=0>> wrote:
>
> Please first update to 2.6.1.
>
>
>
> If you have your crashed projects – you also have projects named with a
> .qgs~. Rename this project and delete the ~  and open it as usual.
>
> A lot of my students had the same problem last week – but only the ones
> who had forgotten to update to 2.6.1
>
> Hope this can help you.
>
> Regards
>
>
>
>
>
> *Lene Fischer*
>
> Associate Professor
>
>
>
> *Department of Geosciences and Natural Resource Management*
>
> University of Copenhagen
>
>
>
> MOB +45
> 40115084
>
> [hidden email] <http:///user/SendEmail.jtp?type=node&node=5183855&i=1>
>
>
>
>
>
> [image: cid:image001.gif@01D03029.2F3EC6A0]
>
>
>
>
>
>
>
> *Fra:* [hidden email]
> <http:///user/SendEmail.jtp?type=node&node=5183855&i=2> [mailto:[hidden
> email] <http:///user/SendEmail.jtp?type=node&node=5183855&i=3>] *På vegne
> af *Matt Boyd
> *Sendt:* 26. januar 2015 23:29
> *Til:* qgis-user
> *Emne:* [Qgis-user] Fwd: QGIS crash on loading projects
>
>
>
> Just a bump to this question, does anyone know how to enable logging or
> find the log file? I really don't want to have to re create all my project
> files and I can't get any of the my old projects to open.
>
>
>
> On Fri, Jan 23, 2015 at 3:09 PM, Matt Boyd <[hidden email]
> <http:///user/SendEmail.jtp?type=node&node=5183855&i=4>> wrote:
>
>
>
>
>
> On Fri, Jan 23, 2015 at 2:58 PM, Nicolas Cadieux <[hidden email]
> <http:///user/SendEmail.jtp?type=node&node=5183855&i=5>> wrote:
>
> Hi,
> If you had and "openlayer" opened (like google earth or bing map), but but
> did not reinstall the plugin, it can crash.  Try installing that plugin and
> see what happens...
>
> Nope, that doesn't help.
>
>
>
> Nicolas Cadieux M.Sc.
> Les Entreprises Archéotec inc.
> 8548, rue Saint-Denis Montréal H2P 2H2
> Téléphone: 514.381.5112  Fax:
>  514.381.4995

Re: [Qgis-user] Fwd: QGIS crash on loading projects

[Matt Boyd]

Thanks Lene,
I tried that on a 3 projects this morning with no change to the behaviour.
I've had 2.6.1 for a while now and these projects opened in that early last
week.
I've also tried loading older projects that are still in 2.0, 2.2, and 2.4
format and the same thing happens.

Most of my projects are on a network drive and I've managed to get a step
further by copying those project files to a local drive. I then get the
"handle bad layers" dialog, then qgis crashes. I need to dig a little to
see if this is a problem in case someone has moved some of the layers the
dialog is referring to but this hasn't caused a crash before.

Is this behaviour logged anywhere?

Thanks
Mat

On Tue, Jan 27, 2015 at 9:58 AM, Lene Fischer  wrote:

>  Please first update to 2.6.1.
>
>
>
> If you have your crashed projects – you also have projects named with a
> .qgs~. Rename this project and delete the ~  and open it as usual.
>
> A lot of my students had the same problem last week – but only the ones
> who had forgotten to update to 2.6.1
>
> Hope this can help you.
>
> Regards
>
>
>
>
>
> *Lene Fischer*
>
> Associate Professor
>
>
>
> *Department of Geosciences and Natural Resource Management*
>
> University of Copenhagen
>
>
>
> MOB +45 40115084
>
> l...@ign.ku.dk
>
>
>
>
>
> [image: cid:image001.gif@01D03029.2F3EC6A0]
>
>
>
>
>
>
>
> *Fra:* qgis-user-boun...@lists.osgeo.org [mailto:
> qgis-user-boun...@lists.osgeo.org] *På vegne af *Matt Boyd
> *Sendt:* 26. januar 2015 23:29
> *Til:* qgis-user
> *Emne:* [Qgis-user] Fwd: QGIS crash on loading projects
>
>
>
> Just a bump to this question, does anyone know how to enable logging or
> find the log file? I really don't want to have to re create all my project
> files and I can't get any of the my old projects to open.
>
>
>
> On Fri, Jan 23, 2015 at 3:09 PM, Matt Boyd  wrote:
>
>
>
>
>
> On Fri, Jan 23, 2015 at 2:58 PM, Nicolas Cadieux <
> nicolas.cadi...@archeotec.ca> wrote:
>
> Hi,
> If you had and "openlayer" opened (like google earth or bing map), but but
> did not reinstall the plugin, it can crash.  Try installing that plugin and
> see what happens...
>
> Nope, that doesn't help.
>
>
>
>  Nicolas Cadieux M.Sc.
> Les Entreprises Archéotec inc.
> 8548, rue Saint-Denis Montréal H2P 2H2
> Téléphone: 514.381.5112  Fax: 514.381.4995
>
> Le 2015-01-22 22:46, "Matt Boyd [via OSGeo.org]" <[hidden email]
> <http://user/SendEmail.jtp?type=node&node=5183270&i=0>> a écrit :
>
> woops, forgot,
>
> windows 7 64 bit,
>
> qgis 2.6 installed via osgeo4w64
>
>
>
> On Fri, Jan 23, 2015 at 2:45 PM, Matt Boyd <[hidden email]
> <http://user/SendEmail.jtp?type=node&node=5183269&i=0>> wrote:
>
> Hi QGISers,
>
> for some reason today I can't load saved QGIS projects. QGIS crashes at
> abour 95% loaded with no information in the notification about why.
>
>
>
> I've tried reinstall from osgeo4w64, reboot, start from command line,
> disabling all plugins.
>
>
>
> Where's the log file kept and is there a way to enable logging from the
> osgeo cl window in windows 7?
>
>
>
> About the only thing that's different today is a few updates, one of them
> being a .NET windows update.
>
>
>
> Thanks
>
> Matt
>
>
>
> ___
> Qgis-user mailing list
> [hidden email] <http://user/SendEmail.jtp?type=node&node=5183269&i=1>
> http://lists.osgeo.org/mailman/listinfo/qgis-user
>  --
>
> *If you reply to this email, your message will be added to the discussion
> below:*
>
>
> http://osgeo-org.1560.x6.nabble.com/QGIS-crash-on-loading-projects-tp5183268p5183269.html
>
> To start a new topic under Quantum GIS - User, email [hidden email]
> <http://user/SendEmail.jtp?type=node&node=5183270&i=1>
> To unsubscribe from Quantum GIS - User, click here.
> NAML
> <http://osgeo-org.1560.x6.nabble.com/template/NamlServlet.jtp?macro=macro_viewer&id=instant_html%21nabble%3Aemail.naml&base=nabble.naml.namespaces.BasicNamespace-nabble.view.web.template.NabbleNamespace-nabble.view.web.template.NodeNamespace&breadcrumbs=notify_subscribers%21nabble%3Aemail.naml-instant_emails%21nabble%3Aemail.naml-send_instant_email%21nabble%3Aemail.naml>
>
>
>  --
>
> View this message in context: Re: QGIS crash on loading projects
> <http://osgeo-org.1560.x6.nabble.com/QGIS-crash-on-loading-projects-tp5183268p5183270.html>
> Sent from the Quantum GIS - User mailing list archive
> <http://osgeo-org.1560.x6.nabble.com/Quantum-GIS-User-f4125267.html> at
> Nabble.com.
>
> ___
> Qgis-user mailing list
> Qgis-user@lists.osgeo.org
> http://lists.osgeo.org/mailman/listinfo/qgis-user
>
>
>
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>
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[Qgis-user] Fwd: QGIS crash on loading projects

[Matt Boyd]

Just a bump to this question, does anyone know how to enable logging or
find the log file? I really don't want to have to re create all my project
files and I can't get any of the my old projects to open.

On Fri, Jan 23, 2015 at 3:09 PM, Matt Boyd  wrote:

>
>
> On Fri, Jan 23, 2015 at 2:58 PM, Nicolas Cadieux <
> nicolas.cadi...@archeotec.ca> wrote:
>
>> Hi,
>> If you had and "openlayer" opened (like google earth or bing map), but
>> but did not reinstall the plugin, it can crash.  Try installing that plugin
>> and see what happens...
>>
> Nope, that doesn't help.
>
>
>> Nicolas Cadieux M.Sc.
>> Les Entreprises Archéotec inc.
>> 8548, rue Saint-Denis Montréal H2P 2H2
>> Téléphone: 514.381.5112  Fax: 514.381.4995
>> Le 2015-01-22 22:46, "Matt Boyd [via OSGeo.org]" <[hidden email]
>> <http:///user/SendEmail.jtp?type=node&node=5183270&i=0>> a écrit :
>>
>> woops, forgot,
>> windows 7 64 bit,
>> qgis 2.6 installed via osgeo4w64
>>
>> On Fri, Jan 23, 2015 at 2:45 PM, Matt Boyd <[hidden email]
>> <http:///user/SendEmail.jtp?type=node&node=5183269&i=0>> wrote:
>> Hi QGISers,
>> for some reason today I can't load saved QGIS projects. QGIS crashes at
>> abour 95% loaded with no information in the notification about why.
>>
>> I've tried reinstall from osgeo4w64, reboot, start from command line,
>> disabling all plugins.
>>
>> Where's the log file kept and is there a way to enable logging from the
>> osgeo cl window in windows 7?
>>
>> About the only thing that's different today is a few updates, one of them
>> being a .NET windows update.
>>
>> Thanks
>> Matt
>>
>>
>>
>> ___
>> Qgis-user mailing list
>> [hidden email] <http:///user/SendEmail.jtp?type=node&node=5183269&i=1>
>> http://lists.osgeo.org/mailman/listinfo/qgis-user
>>
>> --
>>  If you reply to this email, your message will be added to the
>> discussion below:
>>
>> http://osgeo-org.1560.x6.nabble.com/QGIS-crash-on-loading-projects-tp5183268p5183269.html
>>  To start a new topic under Quantum GIS - User, email [hidden email]
>> <http:///user/SendEmail.jtp?type=node&node=5183270&i=1>
>> To unsubscribe from Quantum GIS - User, click here.
>> NAML
>> <http://osgeo-org.1560.x6.nabble.com/template/NamlServlet.jtp?macro=macro_viewer&id=instant_html%21nabble%3Aemail.naml&base=nabble.naml.namespaces.BasicNamespace-nabble.view.web.template.NabbleNamespace-nabble.view.web.template.NodeNamespace&breadcrumbs=notify_subscribers%21nabble%3Aemail.naml-instant_emails%21nabble%3Aemail.naml-send_instant_email%21nabble%3Aemail.naml>
>>
>> --
>> View this message in context: Re: QGIS crash on loading projects
>> <http://osgeo-org.1560.x6.nabble.com/QGIS-crash-on-loading-projects-tp5183268p5183270.html>
>> Sent from the Quantum GIS - User mailing list archive
>> <http://osgeo-org.1560.x6.nabble.com/Quantum-GIS-User-f4125267.html> at
>> Nabble.com.
>>
>> ___
>> Qgis-user mailing list
>> Qgis-user@lists.osgeo.org
>> http://lists.osgeo.org/mailman/listinfo/qgis-user
>>
>
>
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Re: [Qgis-user] QGIS crash on loading projects

[Matt Boyd]

woops, forgot,
windows 7 64 bit,
qgis 2.6 installed via osgeo4w64

On Fri, Jan 23, 2015 at 2:45 PM, Matt Boyd  wrote:

> Hi QGISers,
> for some reason today I can't load saved QGIS projects. QGIS crashes at
> abour 95% loaded with no information in the notification about why.
>
> I've tried reinstall from osgeo4w64, reboot, start from command line,
> disabling all plugins.
>
> Where's the log file kept and is there a way to enable logging from the
> osgeo cl window in windows 7?
>
> About the only thing that's different today is a few updates, one of them
> being a .NET windows update.
>
> Thanks
> Matt
>
___
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[Qgis-user] QGIS crash on loading projects

[Matt Boyd]

Hi QGISers,
for some reason today I can't load saved QGIS projects. QGIS crashes at
abour 95% loaded with no information in the notification about why.

I've tried reinstall from osgeo4w64, reboot, start from command line,
disabling all plugins.

Where's the log file kept and is there a way to enable logging from the
osgeo cl window in windows 7?

About the only thing that's different today is a few updates, one of them
being a .NET windows update.

Thanks
Matt
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Re: [Qgis-user] Re : Edit print composer

[Matt Boyd]

On Thu, Jan 15, 2015 at 1:42 AM, Alexandre Neto 
wrote:

>
> How cool can that be?
>

very very cool, thanks.
Matt Boyd



> Alexandre Neto
>
>
> On Wed, Jan 14, 2015 at 2:48 AM, Matt Boyd  wrote:
>
>> thanks Andreas,
>> every time I turn around there's something new in QGIS (which is great).
>> just browsing through the manual, are you able to give me some tips on
>> how to enable / use this functionality.
>>
>> On Wed, Jan 14, 2015 at 10:06 AM, Andreas Neumann 
>> wrote:
>>
>>>  Hi,
>>>
>>> It isn't directly possible.
>>>
>>> However, starting with QGIS 2.6 you can use the visibility presets
>>> (bookmarks of combinations of layer visiblities) which can be used directly
>>> in both the main window and the print composer. So you can switch very
>>> quickly in both windows.
>>>
>>> Andreas
>>>
>>>
>>>
>>> On 13.01.2015 23:57, drruddy gmail wrote:
>>>
>>>  Hello Matt,
>>>
>>>  I don’t think that’s possible. Would be interested to know if it can
>>> be done but I’ve only been able to change layers in composer from map
>>>
>>>  MR
>>>
>>>
>>> On 13 January 2015 at 22:48:42, Matt Boyd (mattsli...@gmail.com) wrote:
>>>
>>>  Thanks junior,
>>> This is what I'm doing at the moment. What I'd like is to be able to
>>> load the locked items in the print composer to the main window.
>>> Sorry if I wasn't clear.
>>> On 13/01/2015 7:02 pm, "Junior"  wrote:
>>>
>>>>  Hi Matt,
>>>> Once you have activated all the layers that should be displayed in your
>>>> print composer, select the map item inside your print composer and check
>>>> the option "lock layers for map item" in the properties tab.
>>>> More info can be found below "Composer Items" chapter in this link
>>>> http://docs.qgis.org/2.6/en/docs/user_manual/print_composer/print_composer.html
>>>>
>>>>  Envoyé depuis mon HTC
>>>>
>>>> - Reply message -
>>>> De : "Matt Boyd" 
>>>> Pour : "qgis-user" 
>>>> Objet : [Qgis-user] Edit print composer
>>>> Date : mar., janv. 13, 2015 06:02
>>>>
>>>> Hi QGISers,
>>>> I've got a few different print composers in the same project and it's
>>>> slightly painful to go back and turn layers on/off when I want to edit one
>>>> of them.
>>>>
>>>>  Is there an easy way to turn on/off the layers in a particular print
>>>> composer automagically?
>>>>
>>>>  THanks
>>>> Matt
>>>>
>>>  ___
>>> Qgis-user mailing list
>>> Qgis-user@lists.osgeo.org
>>> http://lists.osgeo.org/mailman/listinfo/qgis-user
>>>
>>>
>>>
>>> ___
>>> Qgis-user mailing 
>>> listQgis-user@lists.osgeo.orghttp://lists.osgeo.org/mailman/listinfo/qgis-user
>>>
>>>
>>>
>>> ___
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>>> http://lists.osgeo.org/mailman/listinfo/qgis-user
>>>
>>
>>
>> ___
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>> http://lists.osgeo.org/mailman/listinfo/qgis-user
>>
>
>
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Re: [Qgis-user] Re : Edit print composer

[Matt Boyd]

thanks Andreas,
every time I turn around there's something new in QGIS (which is great).
just browsing through the manual, are you able to give me some tips on how
to enable / use this functionality.

On Wed, Jan 14, 2015 at 10:06 AM, Andreas Neumann 
wrote:

>  Hi,
>
> It isn't directly possible.
>
> However, starting with QGIS 2.6 you can use the visibility presets
> (bookmarks of combinations of layer visiblities) which can be used directly
> in both the main window and the print composer. So you can switch very
> quickly in both windows.
>
> Andreas
>
>
>
> On 13.01.2015 23:57, drruddy gmail wrote:
>
>  Hello Matt,
>
>  I don’t think that’s possible. Would be interested to know if it can be
> done but I’ve only been able to change layers in composer from map
>
>  MR
>
>
> On 13 January 2015 at 22:48:42, Matt Boyd (mattsli...@gmail.com) wrote:
>
>  Thanks junior,
> This is what I'm doing at the moment. What I'd like is to be able to load
> the locked items in the print composer to the main window.
> Sorry if I wasn't clear.
> On 13/01/2015 7:02 pm, "Junior"  wrote:
>
>>  Hi Matt,
>> Once you have activated all the layers that should be displayed in your
>> print composer, select the map item inside your print composer and check
>> the option "lock layers for map item" in the properties tab.
>> More info can be found below "Composer Items" chapter in this link
>> http://docs.qgis.org/2.6/en/docs/user_manual/print_composer/print_composer.html
>>
>>  Envoyé depuis mon HTC
>>
>> - Reply message -
>> De : "Matt Boyd" 
>> Pour : "qgis-user" 
>> Objet : [Qgis-user] Edit print composer
>> Date : mar., janv. 13, 2015 06:02
>>
>> Hi QGISers,
>> I've got a few different print composers in the same project and it's
>> slightly painful to go back and turn layers on/off when I want to edit one
>> of them.
>>
>>  Is there an easy way to turn on/off the layers in a particular print
>> composer automagically?
>>
>>  THanks
>> Matt
>>
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Re: [Qgis-user] Re : Edit print composer

[Matt Boyd]

Thanks junior,
This is what I'm doing at the moment. What I'd like is to be able to load
the locked items in the print composer to the main window.
Sorry if I wasn't clear.
On 13/01/2015 7:02 pm, "Junior"  wrote:

> Hi Matt,
> Once you have activated all the layers that should be displayed in your
> print composer, select the map item inside your print composer and check
> the option "lock layers for map item" in the properties tab.
> More info can be found below "Composer Items" chapter in this link
> http://docs.qgis.org/2.6/en/docs/user_manual/print_composer/print_composer.html
>
> Envoyé depuis mon HTC
>
> - Reply message -
> De : "Matt Boyd" 
> Pour : "qgis-user" 
> Objet : [Qgis-user] Edit print composer
> Date : mar., janv. 13, 2015 06:02
>
> Hi QGISers,
> I've got a few different print composers in the same project and it's
> slightly painful to go back and turn layers on/off when I want to edit one
> of them.
>
> Is there an easy way to turn on/off the layers in a particular print
> composer automagically?
>
> THanks
> Matt
>
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[Qgis-user] Edit print composer

[Matt Boyd]

Hi QGISers,
I've got a few different print composers in the same project and it's
slightly painful to go back and turn layers on/off when I want to edit one
of them.

Is there an easy way to turn on/off the layers in a particular print
composer automagically?

THanks
Matt
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Re: [Qgis-user] Export categorized layers

[Matt Boyd]

You can save the joined layer as a shapefile.
Then use the filter (right click on the layer > filter) to determine which
properties to select (you can even do a WHERE IS NOT NULL type thing I
think), it's just simple SQL type stuff there.
Then save the result as a shapefile.

Unless I don't understand what you're trying to do?

On Tue, Nov 25, 2014 at 3:08 PM, Matt Boyd  wrote:

> So you have a layer created by joining 2 layers and you want to
> export/save the filtered  result?
> On 25/11/2014 2:22 am, "sudeten"  wrote:
>
>> I am using vector layers (one is shapefile and one is csv).  The csv gives
>> values for different shapes in the shapefile.  I have them colored as a
>> thematic map by using properties/style/categorized and choosing the
>> variable
>> that I need.  Now I need to export the map (just those shapes that have
>> values and are categorized - not the uncategorized shapes) to a shapefile
>> and or KML file.
>>
>> This is very basic GIS stuff -- 1) create thematic map and 2) display
>> thematic map as a KML layer or a shapefile.  But I have found no way to do
>> this but many people asking the same question.
>>
>> Any help here?
>>
>>
>>
>> --
>> View this message in context:
>> http://osgeo-org.1560.x6.nabble.com/Export-categorized-layers-tp5174544.html
>> Sent from the Quantum GIS - User mailing list archive at Nabble.com.
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Re: [Qgis-user] Export categorized layers

[Matt Boyd]

So you have a layer created by joining 2 layers and you want to export/save
the filtered  result?
On 25/11/2014 2:22 am, "sudeten"  wrote:

> I am using vector layers (one is shapefile and one is csv).  The csv gives
> values for different shapes in the shapefile.  I have them colored as a
> thematic map by using properties/style/categorized and choosing the
> variable
> that I need.  Now I need to export the map (just those shapes that have
> values and are categorized - not the uncategorized shapes) to a shapefile
> and or KML file.
>
> This is very basic GIS stuff -- 1) create thematic map and 2) display
> thematic map as a KML layer or a shapefile.  But I have found no way to do
> this but many people asking the same question.
>
> Any help here?
>
>
>
> --
> View this message in context:
> http://osgeo-org.1560.x6.nabble.com/Export-categorized-layers-tp5174544.html
> Sent from the Quantum GIS - User mailing list archive at Nabble.com.
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Re: [Qgis-user] NoData

[Matt Boyd]

I can contribute a couple of things from my experience with some of these.
1. there are some gotchas with using NULL (in vector files) is that the
result of X+NULL or X concatenate NULL, effectively any operation using
NULL the result is NULL. This is expected/deliberate.
I've only come across Nan in tiffs when there's somethings wrong with the
format / import.
Nodata seems to be specified, the default is set at 0 on most files/formats
I've dealt with (usually single band rasters) and its handled the same way
as if I specify -999.

Matt



On Wed, Oct 15, 2014 at 10:39 AM, Bernd Vogelgesang <
bernd.vogelges...@gmx.de> wrote:

>  This post seemes to have drowned, so I dare to bump it, hoping that some
> less confused people like me might anwser to it.
> I'm using QGIS for years now, but I never figured out how that stuff is
> supposed to work.
> One of the reasons why I try to do a lot of stuff now in R is that NA is
> NA !
>
> Am 08.10.2014, 11:27 Uhr, schrieb Niccolò Marchi <
> sciurusurba...@hotmail.it>:
>
> hi all!
> please, is there someone who could explain properly all the "NoData topic"?
>
> I mean:
> 1. differences in setting negative values (-999, -, -3.40282e +35,
> etc) VS NoData (Nan, NoData, NULL)
> 2. how QGIS handles it
> 3. "best practices" or good hints for managing them
>
> sorry but I've quite a big confusion.
>
> Thank you very much in advance!
>
> Nic
>
>
>
>
> --
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> Siedlerstraße 2
> 91083 Baiersdorf/Igelsdorf
> Tel: 09133-825374
>
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[Qgis-user] Clarke ellipsoid

[Matt Boyd]

Hi QGISer's
I've some old (early 1960's) that was acquired with what appears to be a
clarke ellipsoid. This predates AGD66. It's from Australia, with a central
meridian of 141. I've got a scanned image but it's from the middle of a
desert and there are no landmarks to georeference. I've also got a series
of lats/longs and XY text files that relate to that data and projection.
epsg 4008 looks to be about the closest however I'm not sure how accurate
this is. Has anyone worked with data like this and how it compares to
something like AGD66/GDA94.

TIA
Matt
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Re: [Qgis-user] OT: IRTF to GDA94 difference

[Matt Boyd]

Thanks everyone,
this is a lot of help.

Matt

On Wed, Oct 1, 2014 at 4:55 AM, Even Rouault 
wrote:

> Hi,
>
> Related to that rather advanced topic, I think I should mention similar
> work
> done in the past by Frank Warmerdam in proj.4 for NAD83 vs WGS84 :
> https://trac.osgeo.org/proj/wiki/HTDPGrids.
> Perhaps a similar approach can work for GDA94.
>
> Best regards,
>
> Even
>
> Le mardi 30 septembre 2014 20:49:56, Chris Crook a écrit :
> > Hi Matt
> >
> > ITRF is a global reference frame (or actually a series of reference
> frames
> > such as ITRF2000, ITRF2005, ITRF2008, and shortly ITRF2013).  It is the
> > coordinate system used for global system such as GNSS (global navigation
> > satellite systems, of which GPS is the most well known).
> >
> > Each tectonic plate is moving relative to it.  So the movement of the
> > Australian plate in this system amounts to about 7 cm per year.
> >
> > GDA94 is an Australian datum and is effectively defined in terms of the
> > Australian plate, so it moves with it.  What that means a point in
> > Australia has a fixed coordinate in terms of GDA94, but it's latitude and
> > longitude in terms of an ITRF is steadily changing, equivalent to the 7cm
> > per year.  In 1994 when GDA94 was originally defined the latitude and
> > longitude were more or less the same as ITRF, which means now the
> > difference is equivalent to about 20*7cm = 1.4m offset.  That is, if you
> > confuse an ITRF latitude and longitude with a GDA94 latitude and
> > longitude, you might be in error by this much.
> >
> > UTM refers to a series of Transverse Mercator with central meridians at 6
> > degrees of longitude spacing.  That is to say it is a set of functions
> for
> > converting latitude and longitude to and from easting and northing.  The
> > UTM coordinate of a point therefore depends upon the latitude and
> > longitude of that point, and as noted above, that depends on the datum
> > (ITRF,GDA94) used to define the latitude and longitude.
> >
> > I haven't reread the specification for a while, but some (many) years ago
> > the datum used for UTM was somewhat ambiguously defined to be the
> > something like the most significant or dominant datum in the zone in
> which
> > it applied.  However that may have changed to be more specific in these
> > days of global reference frames.  If this definition remains then UTM
> > zones over Australia could be in terms of GDA94.  However that seems
> > unlikely, maybe someone with more current can confirm or deny!
> >
> > The main point is that if you care about accuracies of the order of 1m,
> > then you need to know what datum you are using.
> >
> > The second main point is that the relationship between datums is time
> > dependent (ie it is not the same in 1994 as 2014).  This is currently not
> > handled by GIS coordinate system metadata, which only handles constant
> (in
> > time) relationships between reference systems.
> >
> > Cheers
> > Chris Crook
> >
> > From: Matt Boyd [mailto:mattsli...@gmail.com]
> > Sent: Tuesday, 30 September 2014 5:17 p.m.
> > To: qgis-user
> > Subject: [Qgis-user] OT: IRTF to GDA94 difference
> >
> > Hi fellow QGIS people,
> > I'd like an easy (as in if it's too hard I probably won't have time to do
> > it) way to confirm the drift on GDA94 compared to UTM. I've done a little
> > digging and haven't been able to find anything except "Australia is
> moving
> > approximately NE at a rate of 7cm per year and in 2005 it was 77cm".
> > Having said that, I'm a little hazy on if UTM is the worldwide reference
> > and how it's related to IRTF.
> >
> > Is there anywhere online that works this out automatically?
> >
> > Thanks
> > Matt
> >
> > 
> > This message contains information, which may be in confidence and may be
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[Qgis-user] OT: IRTF to GDA94 difference

[Matt Boyd]

Hi fellow QGIS people,
I'd like an easy (as in if it's too hard I probably won't have time to do
it) way to confirm the drift on GDA94 compared to UTM. I've done a little
digging and haven't been able to find anything except "Australia is moving
approximately NE at a rate of 7cm per year and in 2005 it was 77cm". Having
said that, I'm a little hazy on if UTM is the worldwide reference and how
it's related to IRTF.

Is there anywhere online that works this out automatically?

Thanks
Matt
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Re: [Qgis-user] Plugin location, multipart split

[Matt Boyd]

and 60 seconds later I found it (opened the plugin directory and found the
menu item name in the .txt file).
I really do appreciate this plugin and all of the others that are
contributed and I'm sure managing a dispersed, collaborative project like
qgis is not something easy to do, but I do seem to spend a little more time
than I like looking for stuff in the menu.

Thanks
Matt

On Mon, Sep 29, 2014 at 5:17 PM, Matt Boyd  wrote:

> Hi,
> can anyone help me find the location of this plugin in the menu? I've
> looked in edit, vector, plugins and I can't find it!
>
> Thanks
> Matt
>
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[Qgis-user] Plugin location, multipart split

[Matt Boyd]

Hi,
can anyone help me find the location of this plugin in the menu? I've
looked in edit, vector, plugins and I can't find it!

Thanks
Matt
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Re: [Qgis-user] Raster calculator merge 2 grids

[Matt Boyd]

I'll answer my own question.
TIFF rasters were doing null+value = null. So I converted to zmap with null
= 0.
Then, Grid-1+Grid2-Grid1=newgrid (where Grid1 had celles valued as 0 for
null) worked.



On Fri, Sep 19, 2014 at 11:33 AM, Matt Boyd  wrote:

> Hi List,
> trying to get my head around the raster calculator.
> I've 2 grids. Where grid 1 is null I want to replace it with grid 2. The
> null value reported in the tiff using the info tool is nan. It's just a
> single band.
>
> I've tried various iteration of this...
>
> ("P_Clip_fill@1">0) * "P_Clip_fill@1"+("P_Clip_fill@1"<=0)*"Z_Clip_fill@1"
>
> Any tips?
> thanks
> Matt
>
>
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[Qgis-user] Raster calculator merge 2 grids

[Matt Boyd]

Hi List,
trying to get my head around the raster calculator.
I've 2 grids. Where grid 1 is null I want to replace it with grid 2. The
null value reported in the tiff using the info tool is nan. It's just a
single band.

I've tried various iteration of this...

("P_Clip_fill@1">0) * "P_Clip_fill@1"+("P_Clip_fill@1"<=0)*"Z_Clip_fill@1"

Any tips?
thanks
Matt
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Re: [Qgis-user] Check geometry validity tools

[Matt Boyd]

If you can't select that feature, can you select everything else and save
the selection as a new file?
On 05/09/2014 6:07 pm, "Alessio Degioannini" 
wrote:

> Hi All,
> as i have written in the first message, the polygon is a ring with less
> then 4 points...
>
>> You may try to correct the invalid feature with the PlainGeometryEditor
>> plugin: https://plugins.qgis.org/plugins/plaingeometryeditor/
>>
>> Here you can manually edit each ring and vertex by manipulating the
>> coordinates in a text-field.
>>
> The polygon is not selectable, also in PlainGeometryEditor.
>
> Alessio
>
> *
> Alessio Degioannini - dottore forestale
> PROTER - Studio Associato Agronomico e Forestale
> C.so Stati Uniti, 27 - 10128 TORINO (ITALY)
> Tel: +39 011 817 0767
> Fax: +39 011 070 2382
> Cell.: +39 329 211 2781
> E-mail: a.degioann...@proterstudio.com
> P.E.C.: a.degioann...@epap.conafpec.it
> *
>
> Il 05/09/2014 09:13, Bernhard Ströbl ha scritto:
>
>> Hi Andreas,
>>
>> you maybe right. However we do not know :-) . I was under the impression
>> it is a simple polygon with only one ring with less than 4 points. ring0 is
>> the first (and if it is a plain polygon the only) ring, isn't it?
>>
>> Bernhard
>>
>> Am 05.09.2014 09:00, schrieb Andreas Neumann:
>>
>>> I think that Alessio is trying to select an invalid ring within a
>>> polygon or multipolygon. This is not possible in the table.
>>>
>>> You may try to correct the invalid feature with the PlainGeometryEditor
>>> plugin: https://plugins.qgis.org/plugins/plaingeometryeditor/
>>>
>>> Here you can manually edit each ring and vertex by manipulating the
>>> coordinates in a text-field.
>>>
>>> Hope this helps,
>>> Andreas
>>>
>>> Am 05.09.2014 06:55, schrieb Bernhard Ströbl:
>>>
 Hi,
 if you cannot select it graphically you should select it in the table

 Bernhard

 Am 05.09.2014 08:48, schrieb Alessio Degioannini:

> Yes.
>
> Il 05/09/2014 08:02, Hakala Oiva (MTT) ha scritto:
>
>> Have you enabled editing?
>>
>> Oiva
>>
>> Well: now i'm trying to select it for delete it, but it seems
>> impossible
>> Someone can help me?
>> Best regards.
>>
>> Alessio
>>
>>
>>
>
>>
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[Qgis-user] Extract lines from raster

[Matt Boyd]

Hi List,
I've got a scanned map I want to extract / digitise the contours from as
lines.
The lines are all black and if I can get everything that's black into a
shapefile I'd be able toedit and assign values once there. Is there
anything in qgis that coudl do this? I had a quick look at orfeo but for
some reason the website is down today.

Thanks
Matt
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Re: [Qgis-user] Splitting file into multiple csv files

[Matt Boyd]

Hi Zoltan,
good point. I did a little reading and there were some notes about awk /
linux having issues if there were too many files open at one time so my
assumption is that all files are open until the script finishes. My file
was sorted and it appears to have worked, but as I go through the data I'll
keep this in mind. I'll run it with >> to see if there is a difference
tomorrow.

regards
Matt



On Tue, Jul 15, 2014 at 4:47 PM, Zoltan Szecsei 
wrote:

>  Hi,
> Can't test this now, and am a very novice awk user, but if column 3 was
> *not* sorted, would only the last contiguous set of records be in the
> output file(s)?
> In other words, when does awk close the output file, and would '>>' be
> safer than '>' ?
>
> Regards,
> Zoltan
>
>
>
> On 2014/07/15 08:29, Matt Boyd wrote:
>
> I possibly shouldn't have bothered the list but as I did, this is the
> script I used.
>
>  awk -F, '{print > $3}' Filtered_data.csv
>
>  prints the whole line and creates a new file named & based on column 3.
>
>  Simple enough to be embarrassing
>
>
>
>
>
> --
>
> ===
> Zoltan Szecsei PrGISc [PGP0031]
> Geograph (Pty) Ltd.
> GIS and Photogrammetric Services
>
> P.O. Box 7, Muizenberg 7950, South Africa.
>
> Mobile: +27-83-6004028
> Fax:+27-86-6115323 www.geograph.co.za
> ===
>
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Re: [Qgis-user] Licence for QGIS

[Matt Boyd]

If you're looking to buy support you can always try the qgis commercial
supporters.

http://qgis.org/en/site/forusers/commercial_support.html#qgis-commercial-support



On Tue, Jul 15, 2014 at 2:34 PM, Nathan Woodrow  wrote:

> Sugandha,
>
> QGIS is free, cost and openness.  You don't need to buy QGIS as it's under
> the GPL.
>
> - Nathan
>
>
> On Tue, Jul 15, 2014 at 1:56 PM,  wrote:
>
>> Hi All,
>>   I want to know, the procedure to buy an QGIS(Licenced).
>>
>> Thanks,
>> Sugandha
>>
>>
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