[Qgis-user] osgeo4w not updating installation

[Michael Dufty via QGIS-User]

Hi,
Wondering if anyone can help me with my problem.
I've been experimenting with running OSGEO4w installer from command line to 
update the ltr with out having to click OK 15 times.
I used the following commands  -k -o -g --quiet-mode --packages qgis-ltr-full 
-R "C:\OSGeo4W"

This appeared to run, and if I run setup again it shows 3.28.13-2 as installed, 
but if I actually open qgis it is still 3.28.12
Even if I uninstall and reinstall with OSGEO4W-setup it remains 3.28.12
There are no standalone versions installed.

Anyone have any ideas what I might have done wrong or how to fix it?  Deleting 
the entire OSGeo4W directory and starting again works, but doesn't help with my 
plan to make updates easier!


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Re: [Qgis-user] Pro tips for beginners

[Michael Dufty via QGIS-User]

My suggestion for great features that seem to often get left out of training.

-Use view themes for all your layouts, so you can go back and edit them (and 
have multiple layouts in one project)
-Drag and drop layers between projects.
-Copy and paste styles between layers.
-Copy and paste objects between layer.
-Memory Layer Saver plugin is awesome (sort of feel like I shouldn't have 
projects consisting entirely of memory layers, but it actually works very well).

For bug reports - although you shouldn't expect it, it is surprising how 
quickly things often get fixed (usually by Nyall Dawson at North Road).
Certainly less likely they will get fixed if no one reports them.
Sometimes preparing a proper bug report can solve your problem and reveal it 
wasn't actually a bug, or at least find a workaround (last time was an issue 
with my profile).

From: QGIS-User  On Behalf Of Emma Hain via 
QGIS-User
Sent: Wednesday, September 20, 2023 11:03 AM
To: qgis-user 
Subject: [Qgis-user] Pro tips for beginners

Hi All
I have asked my local AU community on any pro tips, but thought you might want 
to contribute as well.
I am presenting at the next Oceania FOSS4G in October on two themes:
- Pro tips for QGIS beginners
- Putting in a QGIS bug

If you think there is anything of interest that I should include in them, 
please feel free to let me know.

I am also trying to determine a term for an action that contributes to the 
sustainability of the QGIS Project. My working term is Kudos Karma Action in 
that you get kudos for doing it and there is karma there as you have helped 
sustain the project that not only benefits the community but you as well. Any 
thoughts on this

Many thanks
Em


--
Emma Hain — Product Manager/Senior GIS Analyst
e...@north-road.com / 0414 512 782
[https://ci3.googleusercontent.com/mail-sig/AIorK4z-QyPD9kQRyEtpg0YHp_bVoq466HfPMkJXDWxnwTf1qCIBS8c19W29po6b7akLq2btEedEMKg]
North Road
Cartography • Development • Spatial Analysis

north-road.com
[https://ci3.googleusercontent.com/mail-sig/AIorK4xbsQ72BNIM2cWMZcuEKVer1Bwaq_gqYkdbtrjK2ifrqv-4o7aWjcvilgYXtNGpXLNgD00xgmQ][https://ci3.googleusercontent.com/mail-sig/AIorK4zEBWGJKio8gqmFT0h_51t4ZnmoGgbmV7SeL-4FKvwWApFWDWyK7p-c0-cSskUe7pjQzjEZj9Q][https://ci3.googleusercontent.com/mail-sig/AIorK4wlMciFPm8hqQZB_Qi57PUCv1dJqUC1A2i9qEMzWRFLcJ7Jil30YnULdJLxT6-qMfI6J4kcac4]
[https://womenindigital.org/wp-content/uploads/2023/03/WID-Membership-Badge.jpg]

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Re: [Qgis-user] Shifting a Geotiff image

[Michael Dufty via QGIS-User]

Good to hear that worked.  Last time I tried georeferencer on webodm output it 
didn't work (issue with images that already had CRS info).  Sounds like the 
problem may have been fixed.
1 to 2 m out does sound suspiciously like a GDA94 vs GDA2020 (current WGS84) 
issue, but probably just a coincidence.

From: QGIS-User  On Behalf Of Grant Boxer 
via QGIS-User
Sent: Sunday, August 13, 2023 5:39 AM
To: qgis-user@lists.osgeo.org
Subject: Re: [Qgis-user] QGIS-User Digest, Vol 210, Issue 10

Thanks Martin,

I ended up using the Georeferencer and the ground control point coordinates 
with a Helmert transformation. That worked well.

Cheers Grant


-Original Message-
From: QGIS-User  On Behalf Of 
qgis-user-requ...@lists.osgeo.org
Sent: Sunday, August 13, 2023 3:00 AM
To: qgis-user@lists.osgeo.org
Subject: QGIS-User Digest, Vol 210, Issue 10

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Today's Topics:

   1. Re: Shifting a Geotiff image (Martin Weis)


--

Message: 1
Date: Sat, 12 Aug 2023 18:17:51 +0200
From: Martin Weis 
To: qgis-user@lists.osgeo.org
Subject: Re: [Qgis-user] Shifting a Geotiff image
Message-ID: 
Content-Type: text/plain; charset=UTF-8; format=flowed

Dear Perth,

On 11/08/2023 09:14, Grant Boxer via QGIS-User wrote:
> I have a GeoTIFF image created using Web ODM and is mis-aligned by 1 
> to 1.5 m and I would like to move the image to register with the 
> surveyed ground control points. I can see vector tools to do this, but 
> no
raster tools.
> Anyone have any suggestions.


If it just a bit off, then the plugin "Freehand raster georeferencer"
can be quick to shift it, otherwise use georeferencer from core (Layer - 
georeferencer), which is especially more flexible and the right tool if you 
have GCPs that you can use.
Be careful, sometimes crashes can occur with certain transformation types, so 
better save beforehand (autoSaver and MemoryLayerSaver are your friends).

> Image created in WGS84 z51S.

Sound like UTM (good, metric CRS), though WGS84 might be geographic CRS (worse, 
pixel size undefined/different in x,y).

Cheers
Martin





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Re: [Qgis-user] Clipping ecw to mask not working

[Michael Dufty via QGIS-User]

I just installed the latest update to Qgis (3.32.1-3) and noticed there was a 
GDAL update so I tried clipping an ecw to mask and it appears to work now.



From: Michael Dufty
Sent: Thursday, July 27, 2023 12:53 PM
To: qgis-user@lists.osgeo.org
Subject: RE: [Qgis-user] Clipping ecw to mask not working

To respond to Kirk and Andrea’s comments.
Yes it works fine on geotiff, including geotiff created be exporting the ecw 
using qgis.  Not always a desirable workaround when dealing with very big ecws.
It is on Windows 10.
GDAL 3.7.1-1 from OSGEO installer
The ecw displays fine in QGIS.  Output layer is set to Byte to match the source
Would be good to know if it works for anyone else.

I thought I would try with a QGIS/GDAL generated ecw  to see if that helps, but 
don’t seem to be able to generate an ecw either.
If I use the export layer command to generate one it says it ran successfully 
but no file is generated.
If I use translate(convert format) it does give error messages as below.  Not 
sure if it is the same issue.
Is GDAL now using the newer ecw sdk that doesn’t support unlicensed writing?  
Might need to go back to Manifold for these things.

QGIS version: 3.32.1-Lima
QGIS code revision: 4a078ecf63
Qt version: 5.15.3
Python version: 3.9.5
GDAL version: 3.7.1
GEOS version: 3.12.0-CAPI-1.18.0
PROJ version: Rel. 9.2.1, June 1st, 2023
PDAL version: 2.5.5 (git-version: a7569c)
Algorithm started at: 2023-07-27T12:43:23
Algorithm 'Translate (convert format)' starting…
Input parameters:
{ 'COPY_SUBDATASETS' : False, 'DATA_TYPE' : 0, 'EXTRA' : '', 'INPUT' : 
'W:/Catalyst/GIS Common/Spatial Data/Aerial Imagery/croptest.tif', 'NODATA' : 
None, 'OPTIONS' : '', 'OUTPUT' : 'W:/Catalyst/GIS Common/Spatial Data/Aerial 
Imagery/croptest.ecw', 'TARGET_CRS' : None }

GDAL command:
gdal_translate -of ECW "W:\\Catalyst\\GIS Common\\Spatial Data\\Aerial 
Imagery\\croptest.tif" "W:/Catalyst/GIS Common/Spatial Data/Aerial 
Imagery/croptest.ecw"
GDAL command output:
ERROR 1: None of ECW_ENCODE_KEY and ECW_ENCODE_COMPANY were provided.
Both are required.
Process returned error code 1
Execution completed in 0.10 seconds
Results:
{'OUTPUT': 'W:/Catalyst/GIS Common/Spatial Data/Aerial Imagery/croptest.ecw'}

Loading resulting layers
The following layers were not correctly generated.
• W:/Catalyst/GIS Common/Spatial Data/Aerial Imagery/croptest.ecw
You can check the 'Log Messages Panel' in QGIS main window to find more 
information about the execution of the algorithm.




Michael Dufty


From: QGIS-User 
mailto:qgis-user-boun...@lists.osgeo.org>> 
On Behalf Of Kirk Schmidt via QGIS-User
Sent: Thursday, July 27, 2023 12:00 AM
To: qgis-user@lists.osgeo.org<mailto:qgis-user@lists.osgeo.org>
Subject: Re: [Qgis-user] Clipping ecw to mask not working


Hi Michael:

Enhance Compression Wavelet (ECW) is a proprietary compression format.  I would 
try exporting your image as a geotiff to see if it is being read correctly and 
does not have internal write protection on it.

Kirk Schmidt
On 7/26/2023 2:02 AM, Michael Dufty via QGIS-User wrote:
I'm having issues trying to clip ecw images to a mask layer.
Using raster-extraction-clip raster to mask layer.
Default parameters.
The tool runs extremely quickly (successfullyin 0.12 seconds), but produces a 
raster entirely black (0,0,0 for all pixels).  With the correct extent of the 
mask layer.
If I tick the box to create an alpha output band it produces an entirely 
transparent result.

Source and mask layers both in EPSG 28350

Anyone else having this issue?  I cannot see any bug reports.
Tried in 328.8, 3.28.9, 3.32.0 and 3.32.1 with same result.

Seems to work fine if input raster is a tif.



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Kirk Schmidt, MScF, BScF, RPF

General Manager

Nortek Resource Solutions Inc.

26 Church Road

Sutherlands River, NS

B0K 1W0

Tel (902) 922.3607

Email: k...@nortekresources.com<mailto:k...@nortekresources.com>

Web: www.nortekresources.com<http://www.nortekresources.com>
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[Qgis-user] Memory Layer Saver plugin temp layers not loading-resolved

[Michael Dufty via QGIS-User]

I have been having some issues with the memory layer saver plugin which I 
thought might be worth sharing.
I find the plugin extremely valuable, but we may be making ourselves too 
dependent on it because it works so well.
Recently the plugin was updated with a great new feature, it now saves the 
.mldata file containing all the memory layers within the .qgz file instead of 
as a sidecar file.
This seems to be the source of our issues with vanishing layers.  We have some 
users with the old version of the plugin and some with the new version.
If an old project is opened with the updated plugin, it successfully loads the 
old data from the external file and moves it to the internal file.
If subsequently opening the project, it reads from the internal file.  All good.
The issue is if someone opens a converted file with the older version of the 
plugin.   It will find the old external mldata file still there.  New layers 
added with the new version will be empty but old ones will still work.  Any new 
layers added with the old plugin will be added to the external mldata file.
If the file is then opened again with the new plugin, it seems to just use the 
internal mldata, and new layers added to the old file will be missing.

In short it all works great as long as all people using the file update to the 
new version plugin at the same time.
I have been able to recover lost layers by opening the qgz file with 7zip and 
overwriting the internal mldata file with the modified external one.  Can get 
messy if there are multiple edits in both versions though.

Were running in circles for a while as we though the issue was with new 
versions of qgis rather than the plugin.

Michael Dufty
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Re: [Qgis-user] Clipping ecw to mask not working

[Michael Dufty via QGIS-User]

To respond to Kirk and Andrea’s comments.
Yes it works fine on geotiff, including geotiff created be exporting the ecw 
using qgis.  Not always a desirable workaround when dealing with very big ecws.
It is on Windows 10.
GDAL 3.7.1-1 from OSGEO installer
The ecw displays fine in QGIS.  Output layer is set to Byte to match the source
Would be good to know if it works for anyone else.

I thought I would try with a QGIS/GDAL generated ecw  to see if that helps, but 
don’t seem to be able to generate an ecw either.
If I use the export layer command to generate one it says it ran successfully 
but no file is generated.
If I use translate(convert format) it does give error messages as below.  Not 
sure if it is the same issue.
Is GDAL now using the newer ecw sdk that doesn’t support unlicensed writing?  
Might need to go back to Manifold for these things.

QGIS version: 3.32.1-Lima
QGIS code revision: 4a078ecf63
Qt version: 5.15.3
Python version: 3.9.5
GDAL version: 3.7.1
GEOS version: 3.12.0-CAPI-1.18.0
PROJ version: Rel. 9.2.1, June 1st, 2023
PDAL version: 2.5.5 (git-version: a7569c)
Algorithm started at: 2023-07-27T12:43:23
Algorithm 'Translate (convert format)' starting…
Input parameters:
{ 'COPY_SUBDATASETS' : False, 'DATA_TYPE' : 0, 'EXTRA' : '', 'INPUT' : 
'W:/Catalyst/GIS Common/Spatial Data/Aerial Imagery/croptest.tif', 'NODATA' : 
None, 'OPTIONS' : '', 'OUTPUT' : 'W:/Catalyst/GIS Common/Spatial Data/Aerial 
Imagery/croptest.ecw', 'TARGET_CRS' : None }

GDAL command:
gdal_translate -of ECW "W:\\Catalyst\\GIS Common\\Spatial Data\\Aerial 
Imagery\\croptest.tif" "W:/Catalyst/GIS Common/Spatial Data/Aerial 
Imagery/croptest.ecw"
GDAL command output:
ERROR 1: None of ECW_ENCODE_KEY and ECW_ENCODE_COMPANY were provided.
Both are required.
Process returned error code 1
Execution completed in 0.10 seconds
Results:
{'OUTPUT': 'W:/Catalyst/GIS Common/Spatial Data/Aerial Imagery/croptest.ecw'}

Loading resulting layers
The following layers were not correctly generated.
• W:/Catalyst/GIS Common/Spatial Data/Aerial Imagery/croptest.ecw
You can check the 'Log Messages Panel' in QGIS main window to find more 
information about the execution of the algorithm.




Michael Dufty


From: QGIS-User  On Behalf Of Kirk Schmidt 
via QGIS-User
Sent: Thursday, July 27, 2023 12:00 AM
To: qgis-user@lists.osgeo.org
Subject: Re: [Qgis-user] Clipping ecw to mask not working


Hi Michael:

Enhance Compression Wavelet (ECW) is a proprietary compression format.  I would 
try exporting your image as a geotiff to see if it is being read correctly and 
does not have internal write protection on it.

Kirk Schmidt
On 7/26/2023 2:02 AM, Michael Dufty via QGIS-User wrote:
I'm having issues trying to clip ecw images to a mask layer.
Using raster-extraction-clip raster to mask layer.
Default parameters.
The tool runs extremely quickly (successfullyin 0.12 seconds), but produces a 
raster entirely black (0,0,0 for all pixels).  With the correct extent of the 
mask layer.
If I tick the box to create an alpha output band it produces an entirely 
transparent result.

Source and mask layers both in EPSG 28350

Anyone else having this issue?  I cannot see any bug reports.
Tried in 328.8, 3.28.9, 3.32.0 and 3.32.1 with same result.

Seems to work fine if input raster is a tif.




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--

Kirk Schmidt, MScF, BScF, RPF

General Manager

Nortek Resource Solutions Inc.

26 Church Road

Sutherlands River, NS

B0K 1W0

Tel (902) 922.3607

Email: k...@nortekresources.com<mailto:k...@nortekresources.com>

Web: www.nortekresources.com<http://www.nortekresources.com>
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Re: [Qgis-user] Problem saving project to geopkg

[Michael Dufty via QGIS-User]

The error message includes MedicalDebt.mldata as a project name.  I believe 
this is the file the memorylayer saver plugin creates to save the temporary 
layers to.   Have you tried it with that plugin disabled?

I'm really dependent on the memory layer saver plugin, and have abandoned 
investigation of saving files to geopackage because memorylayer saver does not 
seem to support it.

Michael Dufty

From: QGIS-User  On Behalf Of David Strip 
via QGIS-User
Sent: Thursday, July 20, 2023 12:27 PM
To: qgis-user 
Subject: [Qgis-user] Problem saving project to geopkg

I created a geopkg by exporting a layer from my project to a new geopkg. I then 
exported a couple of other layers to the geopkg. I then did File->Save To-> 
geopkg and saved my project to the geopkg. So far, so good. Now I made some 
changes to the project and tried to save it and now I get a python error
ValueError: Cannot open 
geopackage:C:/Users/David/Documents/Geodata/Maps/RIP_Medical_Debt.gpkg?projectName=MedicalDebt.mldata
How do I fix this?
Thanks

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[Qgis-user] Clipping ecw to mask not working

[Michael Dufty via QGIS-User]

I'm having issues trying to clip ecw images to a mask layer.
Using raster-extraction-clip raster to mask layer.
Default parameters.
The tool runs extremely quickly (successfullyin 0.12 seconds), but produces a 
raster entirely black (0,0,0 for all pixels).  With the correct extent of the 
mask layer.
If I tick the box to create an alpha output band it produces an entirely 
transparent result.

Source and mask layers both in EPSG 28350

Anyone else having this issue?  I cannot see any bug reports.
Tried in 328.8, 3.28.9, 3.32.0 and 3.32.1 with same result.

Seems to work fine if input raster is a tif.

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Re: [Qgis-user] Layout export to image not cropping when draw coordinates outside map frame enabled.

[Michael Dufty via QGIS-User]

Just checked and someone else has reported it as a bug a year ago.  Print 
layout: crop to content produces incorrect cropping when grid coordinates 
labels are present #47250
https://github.com/qgis/QGIS/issues/47250


From: QGIS-User  On Behalf Of Michael Dufty 
via QGIS-User
Sent: Wednesday, 22 March 2023 11:42 PM
To: qgis-user@lists.osgeo.org
Subject: [Qgis-user] Layout export to image not cropping when draw coordinates 
outside map frame enabled.

I'm having an issue exporting layouts to image.  Wondering if anyone else has 
found a solution.
Not sure if it is a bug or a feature.

If I have grid coordinate labels around the outside of a map frame (draw 
coordinates), I find when I export as image with crop to content checked and 0 
margins, I end up with a large margin of about 70 pixels around the export, 
wherever the map frame is near the edge.
In the past I've used a work around, setting the text as inside the map frame, 
but with a negative offset so it appears outside.
Since the latest update 3.28.4/3.30 this no longer works, the export is still 
cropped correctly, but the labels vanish (visible in layout preview but not in 
the image export).

Anyone have any ideas or should it be a bug report?  Looks like the extra 
margin may is about what would be required if the coordinates labels were 
perpendicular to the frame instead of parallel.

Michael Dufty

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[Qgis-user] Layout export to image not cropping when draw coordinates outside map frame enabled.

[Michael Dufty via QGIS-User]

I'm having an issue exporting layouts to image.  Wondering if anyone else has 
found a solution.
Not sure if it is a bug or a feature.

If I have grid coordinate labels around the outside of a map frame (draw 
coordinates), I find when I export as image with crop to content checked and 0 
margins, I end up with a large margin of about 70 pixels around the export, 
wherever the map frame is near the edge.
In the past I've used a work around, setting the text as inside the map frame, 
but with a negative offset so it appears outside.
Since the latest update 3.28.4/3.30 this no longer works, the export is still 
cropped correctly, but the labels vanish (visible in layout preview but not in 
the image export).

Anyone have any ideas or should it be a bug report?  Looks like the extra 
margin may is about what would be required if the coordinates labels were 
perpendicular to the frame instead of parallel.

Michael Dufty

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[Qgis-user] QGIS in office 365 environment?

[Michael Dufty via QGIS-User]

We have a client who currently have all their files on OneDrive/Office365.
Has anyone had any success or failure using QGIS in this environment?

It seems like it could work using OneDrive sync so long as all data files are 
kept below qgz files in the file structure.
I'm suspicious that we could end up with a lot of sync errors though, and 
OneDrive doesn't seem to handle them well.  They would like multiple users to 
be able to access data.

They do not have a great internet connection, so I suspect may have to set up a 
local fileshare or even PostgreSQL.
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Re: [Qgis-user] Georeferencer not working in 3.26.3 unless new profile

[Michael Dufty via Qgis-user]

Thanks,
I have had the semi-automatic classification plugin installed previously, 
though it was not currently.  Could it have left something behind in the 
profile?
I just tried installing 7.10.8 and that did not fix the problem.

Michael Dufty

From: Qgis-user  On Behalf Of Andrea 
Giudiceandrea via Qgis-user
Sent: Monday, 10 October 2022 7:33 PM
To: qgis-user@lists.osgeo.org
Subject: Re: [Qgis-user] Georeferencer not working in 3.26.3 unless new profile

Michael Dufty
Mon Oct 10 04:10:57 PDT 2022


I cannot get georeferencer to produce output in 3.26.3 on Windows 10.

Hi Michael,
is the Semi-Automatic Classification Plugin installed in your QGIS user 
profile? If yes and if the plugin version is < 7.10.7, this may be the cause of 
the issue.

Best regards.

Andrea Giudiceandrea
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[Qgis-user] Georeferencer not working in 3.26.3 unless new profile

[Michael Dufty via Qgis-user]

I cannot get georeferencer to produce output in 3.26.3 on Windows 10.
On run it fails with the message Transform Failed:Could not create destination 
file.
Running with the same files, settings and control points in the LTR 3.22.11 
works as expected.

If I set up a new default profile it works, however I have a lot of useful 
stuff in my user profile.
Anyone have an idea what the issue might be, are there user profile things I 
could tweak or do I just need to start afresh adding all my customisations back 
into the user profile until something breaks?

Michael Dufty

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[Qgis-user] Two different raster calculators in QGIS and negative value handling - any explanation?

[Michael Dufty via Qgis-user]

It appears that there are two different native raster calculator tools in QGIS
One is found in at the top of the raster menu
The other is in the processing toolbox in the raster analysis group

(Not to mention the GDAL raster calculator and SAGA raster calculator)

Can anyone explain the reason for there being two, and what the differences are?
I've been very confused by it, mainly because the one in the raster menu does 
not appear to handle negative values correctly.  I'd been wondering why NDVI 
type expressions with negatives randomly worked or not, and discovered it just 
depended on which raster calculator I used.
Is it expected that the one in the raster menu doesn't handle negative values 
correctly?  It looks like it might do calculations based on unsigned integers 
regardless of the input and output raster formats.

Michael Dufty

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[Qgis-user] Georeferencing a geotiff issues.

[Michael Dufty]

Has anyone been able to successfully use the georeferencer to adjust alignment 
on a geotiff that already has positioning data?
I've been trying to make some minor adjustments to some drone generated mosaics.
My experience is the georeferencer seems to correctly load the geotiff with CRS.
It displays the projected coordinates and records GCPs in those coordinates, 
but it appears to then try to transform as though they were pixel coordinates.
Eg. the Source and destination GCP's Y values might be 6,300,000 and 6,300,010  
but the dy reported is not 10, it is approximately -6,300,000
If I ignore the problem the georeferencer runs correctly, but puts the result 
completely in the wrong place as suggested by the dy value.
This is happening with source, control points and destination CRS all set the 
same.

Is there something I am doing wrong or is this just a bug?  Seems to work fine 
if I run the geotiff through and image editor to remove the initial 
georeferencing.

Michael Dufty

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Re: [Qgis-user] Does DWG work in 3.22? - RE: importing dwg/dxf

[Michael Dufty]

The older version of AutoCAD Civil3d I have includes AutoCAD map functions and 
definitely gives you options to include CRS information in the dwg outputs.  
The problem is I think the same software is the only thing that will read that 
information, so I never bothered using that function.The export to shape 
file feature is more useful.  Not sure how many versions of AutoCAD have that 
capacity, but I can't recall ever receiving any shape exports from AutoCAD.

Recent versions of QGIS seem to be handling dxf files really well, so I always 
convert to that before trying to open.  CADWizz is a very affordable converter 
that often seems to work when other options fail.

Michael Dufty

From: Qgis-user  On Behalf Of Jeff Sonnentag
Sent: Monday, 22 November 2021 12:07 PM
To: Bernd Vogelgesang ; Nicolas Cadieux 
; Greg Troxel ; Boaz Bar Ilan 

Cc: qgis-user 
Subject: [Qgis-user] Does DWG work in 3.22? - RE: importing dwg/dxf

Somebody must get the same quality of “engineering” that we do here.  :D

The last item received was in feet and aligns with California State Plane Zone 
6, but they chopped off the first digit of both “X” and “Y” for everything.  
Who knows why.  Maybe things run faster for them with 6 digit coordinates 
rather than 7 digit ones like you mentioned.  (???)

Anyway, when I tried the simple drag and drop into QGIS 3.22 it never worked.  
Always an error message about invalid data, even after I used DWG Trueview to 
convert it to the oldest possible versions (97/98 and 2000).  I did manage to 
get it in AFTER converting the DWG to a DXF with an online conversion site.  
That DXF could be drug (I hate the word “dragged” – seems along the lines of 
“runned”) into QGIS and appeared OK.  Export to a shapefile and then do some 
affine adjustment magic and things can be worked with.

Is there a reason that a DWG can’t be dropped into QGIS 3.22 but a DXF can?  
Are there some DWG versions that just don’t work?  I thought I got a DWG to 
appear OK in 3.16, but maybe I just imagined it and used a DXF before too. . . .


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Re: [Qgis-user] Crashing with snapping and WFS !?

[Michael Dufty]

I think I recall checking and a bug report was already there, but I can't find 
it now, so can have a go.

From: Alessandro Pasotti 
Sent: Friday, 22 October 2021 4:33 PM
To: Michael Dufty 
Cc: Lars I. Nielsen ; qgis-user@lists.osgeo.org
Subject: Re: [Qgis-user] Crashing with snapping and WFS !?

Hi,

this really sounds like a bug, can you file a ticket if there isn't one already?

On Fri, Oct 22, 2021 at 4:16 AM Michael Dufty 
mailto:mdu...@mbsenvironmental.com.au>> wrote:
I'm not sure if its related, but I often have issues with snapping and arcgis 
rest layers.  The problem is if snapping is enabled QGIS will index the entire 
layer.  If it happens to be a national dataset - the sort of thing web layers 
are great for, this can take an hour or so, with QGIS unresponsive for the 
whole time often it won't actually crash if you are patient enough, but better 
to force quit if you have saved.  Often I don't even want to snap to that 
layer, just accidentally had snap to all layers enabled, and once you realise 
it is happening it is too late to save the setting.  Even worse the settings 
only seem to be available when snap is enabled, so to fix it, you need to hide 
the layer, turn snap on, change the settings, then turn the layers back on.

Michael Dufty
-Original Message-
From: Qgis-user 
mailto:qgis-user-boun...@lists.osgeo.org>> 
On Behalf Of Lars I. Nielsen
Sent: Wednesday, 20 October 2021 7:29 PM
To: Julien Cabieces 
mailto:julien.cabie...@oslandia.com>>
Cc: qgis-user@lists.osgeo.org<mailto:qgis-user@lists.osgeo.org>
Subject: Re: [Qgis-user] Crashing with snapping and WFS !?

Thanks Julien.

It's on Windows. It's at a customer, so I'm not entirely sure what version, 
except that it's Windows 10.

I did a bug report on it: # 45589.

Cheers
Lars

-Oprindelig meddelelse-
Fra: Julien Cabieces 
[mailto:julien.cabie...@oslandia.com<mailto:julien.cabie...@oslandia.com>]
Sendt: 18. oktober 2021 09:15
Til: Lars I. Nielsen
Cc: qgis-user@lists.osgeo.org<mailto:qgis-user@lists.osgeo.org>
Emne: Re: [Qgis-user] Crashing with snapping and WFS !?


Hi,


Could you please open an issue here https://github.com/qgis/QGIS/issues
?

Does it happen on Linux or Windows ?

Do you manage to reproduce the issue every time or it happen randomly?

Kind regards,
Julien

> Hi list.
>
>
>
> We’re running a dataset via WFS (Geoserver 2.16) into QGIS.
>
> The user has snap turned on while digitizing/editing, and too often this 
> combo results in QGIS crashing.
>
>
>
> However, this crash does not happen when digitizing/editing, but during other 
> operations like panning the map or something similar.
>
>
>
> The stack dump mentions “snapPoint”, “snapToMap”, “nearestVertex”, and 
> “closestVertex”, which to me implies the snapping function in action.
>
> It also mentions “canvasMoveEvent”, which to me implies a panning operation.
>
>
>
> I expect the snapping operation to be entirely local, i.e. independent of 
> actual data source type, but this apparently only happens when using a WFS 
> data source.
>
>
>
> Can anyone shed some light on this unexpected behavior ? Is it a bug ?
>
>
>
> Here’s the crash dialog box:
>
> *
>
>
>
> QGIS is version 3.16.10, as the stack dump shows.
>
>
>
>
>
> Med venlig hilsen
>
> Lars I. Nielsen
> GIS-kons., FME+Python Certified Professional
> GeoData
>
>
>
> *
>  Dir. +4563136849
>  Tlf.  +4563136800
>  Mail  +l...@lifa.dk<mailto:l...@lifa.dk>
> *
>
>
>
> LIFA A/S · Tlf +4563136800 · lifa.dk<http://lifa.dk> · CVRI20937289
>
> Odense · København · Fredericia · Vejle · Kolding · Aarhus · Middelfart · 
> Vissenbjerg · Kerteminde
>
> * Følg os på LinkedIn og læs de seneste nyheder fra LIFA A/S
> *

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--
Alessandro Pasotti
QCooperative:  www.qcooperative.net<https://www.qcooperative.net>
ItOpen:   www.itopen.it<http://www.itopen.it>
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Re: [Qgis-user] Crashing with snapping and WFS !?

[Michael Dufty]

I'm not sure if its related, but I often have issues with snapping and arcgis 
rest layers.  The problem is if snapping is enabled QGIS will index the entire 
layer.  If it happens to be a national dataset - the sort of thing web layers 
are great for, this can take an hour or so, with QGIS unresponsive for the 
whole time often it won't actually crash if you are patient enough, but better 
to force quit if you have saved.  Often I don't even want to snap to that 
layer, just accidentally had snap to all layers enabled, and once you realise 
it is happening it is too late to save the setting.  Even worse the settings 
only seem to be available when snap is enabled, so to fix it, you need to hide 
the layer, turn snap on, change the settings, then turn the layers back on.

Michael Dufty
-Original Message-
From: Qgis-user  On Behalf Of Lars I. Nielsen
Sent: Wednesday, 20 October 2021 7:29 PM
To: Julien Cabieces 
Cc: qgis-user@lists.osgeo.org
Subject: Re: [Qgis-user] Crashing with snapping and WFS !?

Thanks Julien.

It's on Windows. It's at a customer, so I'm not entirely sure what version, 
except that it's Windows 10.

I did a bug report on it: # 45589.

Cheers
Lars

-Oprindelig meddelelse-
Fra: Julien Cabieces [mailto:julien.cabie...@oslandia.com] 
Sendt: 18. oktober 2021 09:15
Til: Lars I. Nielsen
Cc: qgis-user@lists.osgeo.org
Emne: Re: [Qgis-user] Crashing with snapping and WFS !?


Hi,


Could you please open an issue here https://github.com/qgis/QGIS/issues
?

Does it happen on Linux or Windows ?

Do you manage to reproduce the issue every time or it happen randomly?

Kind regards,
Julien

> Hi list.
>
>  
>
> We’re running a dataset via WFS (Geoserver 2.16) into QGIS.
>
> The user has snap turned on while digitizing/editing, and too often this 
> combo results in QGIS crashing.
>
>  
>
> However, this crash does not happen when digitizing/editing, but during other 
> operations like panning the map or something similar.
>
>  
>
> The stack dump mentions “snapPoint”, “snapToMap”, “nearestVertex”, and 
> “closestVertex”, which to me implies the snapping function in action.
>
> It also mentions “canvasMoveEvent”, which to me implies a panning operation.
>
>  
>
> I expect the snapping operation to be entirely local, i.e. independent of 
> actual data source type, but this apparently only happens when using a WFS 
> data source.
>
>  
>
> Can anyone shed some light on this unexpected behavior ? Is it a bug ?
>
>  
>
> Here’s the crash dialog box:
>
> *
>
>  
>
> QGIS is version 3.16.10, as the stack dump shows.
>
>  
>
>  
>
> Med venlig hilsen
>
> Lars I. Nielsen
> GIS-kons., FME+Python Certified Professional
> GeoData
>
>  
>
> * 
>  Dir. +4563136849 
>  Tlf.  +4563136800 
>  Mail  +l...@lifa.dk 
> *
>
>  
>
> LIFA A/S · Tlf +4563136800 · lifa.dk · CVRI20937289
>
> Odense · København · Fredericia · Vejle · Kolding · Aarhus · Middelfart · 
> Vissenbjerg · Kerteminde 
>
> * Følg os på LinkedIn og læs de seneste nyheder fra LIFA A/S  
> *

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Re: [Qgis-user] georeferencing

[Michael Dufty]

I’ve found if you tick “Use 0 for transparency when needed” in the 
transformation settings, before you georeference, the bands you mention will 
automatically be transparent.
This only seems to be necessary if you start with a jpeg.
If you start with a tif or png format image, that supports transparency, the 
resulting image has transparent borders regardless of the setting.
This is probably the same as Nicolas’ method, just that qgis does it for you.  
Nicolas’ method is more useful if you already did the georeferencing and have 
not saved GCPs to do it again.

For clipping – look in the raster menu – Extraction, there are two options, 
clip to extent or clip to mask layer.

Another useful trick with scanned maps is, if you have scanned a line drawing 
type map that is predominantly white, try setting rendering mode to multiply – 
this makes white areas completely transparent so allows you to overlay the 
scanned map over other data, photos etc. very easily.


From: Qgis-user  On Behalf Of Firstname 
Lastname
Sent: Friday, 3 September 2021 1:39 AM
To: qgis-user@lists.osgeo.org
Subject: [Qgis-user] georeferencing

i have successfully georreferenced several maps in QGIS.  The georeferencing 
tool leaves a black band around the rotated and shifted image.  is there any 
way to get rid of this.  also, i would like to clip some  of these images to 
get rid of the margin material.  is there a way to do this in QGIS?
--
Byron Veilleux, MSc. P.Geo
Conjugate Geologic Services Limited

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Re: [Qgis-user] Aerial photo dates in legend without RGB patches?

[Michael Dufty]

Hi Kirk,
I just want to display the date in the legend.  Happy to add it manually for 
each layer by editing the layer name or any other method.
Applies equally to aerials I've produced myself, purchased, been supplied by a 
client or linked to a server.  Assuming I know the date, how can I display it 
in the legend?

Michael Dufty

From: Qgis-user  On Behalf Of Kirk Schmidt
Sent: Tuesday, 25 May 2021 10:08 PM
To: qgis-user@lists.osgeo.org
Subject: Re: [Qgis-user] Aerial photo dates in legend without RGB patches?


Hi Michael:

Just to be clear, these are your own georeferenced aerial photo's or 
professionally produced ortho photo's (as opposed to satellite imagery).  If 
so, where would the date field come from, the name of the image files or 
perhaps embedded in the geotiff header (if using this file type)?

Kirk Schmidt


On 5/25/2021 10:22 AM, Michael Dufty wrote:
Has anyone got a good solution to display aerial photo dates in the legend?
I can change the name of the layer, but then it displays a huge useless R G B 
legend.  Is there any way to turn this off?  Setting the patch size to 0 
doesn't seem to be possible for local images, although it does work for WMS 
layers.
Alternatively is there a way to just put a manual line of text in the legend, 
other than with dummy layers/groups?

Michael Dufty




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--

Kirk Schmidt, MScF, BScF, RPF

General Manager

Nortek Resource Solutions Inc.

RR # 1

Thorburn, NS

B0K 1W0

Tel (902) 922.3607

Email: k...@nortekresources.com<mailto:k...@nortekresources.com>

Web: www.nortekresources.com<http://www.nortekresources.com>
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[Qgis-user] Aerial photo dates in legend without RGB patches?

[Michael Dufty]

Has anyone got a good solution to display aerial photo dates in the legend?
I can change the name of the layer, but then it displays a huge useless R G B 
legend.  Is there any way to turn this off?  Setting the patch size to 0 
doesn't seem to be possible for local images, although it does work for WMS 
layers.
Alternatively is there a way to just put a manual line of text in the legend, 
other than with dummy layers/groups?

Michael Dufty

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Re: [Qgis-user] How to select a polygon feature underneath another in the same ArcGIS REST feature layer.

[Michael Dufty]

I just tried the right click in 3.18 and it does exactly what I wanted 
perfectly.  It allows to choose which feature to select or to select all.
It didn’t seem to be working for me previously, but I have the LTR installed as 
well and may have accidentally been using that.

Would still love to know if there is any possibility of operations that trigger 
prolonged indexing of web layers having a cancel option or warning.

Michael Dufty

From: Karl Magnus Jönsson 
Sent: Monday, 17 May 2021 2:43 PM
To: Michael Dufty ; qgis-user 

Subject: SV: How to select a polygon feature underneath another in the same 
ArcGIS REST feature layer.

Hi!
How does the new feature (3.18), right click with the select tool to get an 
menu, work with this data?
https://www.qgis.org/en/site/forusers/visualchangelog318/index.html#feature-select-features-context-menu

Karl-Magnus Jönsson

Från: Qgis-user  För Michael Dufty
Skickat: den 14 maj 2021 09:01
Till: qgis-user 
Ämne: [Qgis-user] How to select a polygon feature underneath another in the 
same ArcGIS REST feature layer.

Does anyone know the best way to select a feature entirely underneath another 
in an ArcGIS REST feature layer.
The standard select tool seems to only select one feature, is there a setting 
to let is select all?
Freehand select actually seemed to work well to get both features, which was 
enough for my purpose.
Radius select initiated an indexing of the whole layer which freezes QGIS for 
about 15 minutes (huge layer).

Related question is there any way to cancel these indexing operations?  Turning 
on snap with such a layer active causes the same issue.

Michael Dufty
Senior Environmental Engineer

[cid:image001.jpg@01D74B41.62E8A450]
MBS ENVIRONMENTAL
4 Cook Street, West Perth  WA 6005

t:+61 8 9226-3166
e:   mdu...@mbsenvironmental.com.au<mailto:mdu...@mbsenvironmental.com.au>
w:   www.mbsenvironmental.com.auhttp://www.mbsenvironmental.com.au/>
Disclaimer:
The information contained in this message is intended for those to whom it is 
addressed. It may contain confidential or privileged information and if you are 
not the intended recipient, you must not copy, distribute or take any action in 
reliance on it. If you received this message in error please destroy it and 
reply to the sender immediately or contact Martinick Bosch Sell Pty Ltd. on +61 
8 9226 3166 immediately. All care has been taken to ensure that this message 
and any attachments are virus free; we do not accept responsibility for any 
virus infections caused by receipt of this message

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[Qgis-user] How to select a polygon feature underneath another in the same ArcGIS REST feature layer.

[Michael Dufty]

Does anyone know the best way to select a feature entirely underneath another 
in an ArcGIS REST feature layer.
The standard select tool seems to only select one feature, is there a setting 
to let is select all?
Freehand select actually seemed to work well to get both features, which was 
enough for my purpose.
Radius select initiated an indexing of the whole layer which freezes QGIS for 
about 15 minutes (huge layer).

Related question is there any way to cancel these indexing operations?  Turning 
on snap with such a layer active causes the same issue.

Michael Dufty
Senior Environmental Engineer

[cid:image001.png@01D748D0.F3F535D0]
MBS ENVIRONMENTAL
4 Cook Street, West Perth  WA 6005

t:+61 8 9226-3166

e:   mdu...@mbsenvironmental.com.au<mailto:mdu...@mbsenvironmental.com.au>
w:   www.mbsenvironmental.com.auhttp://www.mbsenvironmental.com.au/>
Disclaimer:
The information contained in this message is intended for those to whom it is 
addressed. It may contain confidential or privileged information and if you are 
not the intended recipient, you must not copy, distribute or take any action in 
reliance on it. If you received this message in error please destroy it and 
reply to the sender immediately or contact Martinick Bosch Sell Pty Ltd. on +61 
8 9226 3166 immediately. All care has been taken to ensure that this message 
and any attachments are virus free; we do not accept responsibility for any 
virus infections caused by receipt of this message

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Re: [Qgis-user] Batch import custom projections

[Michael Dufty]

Not much help, but I posted a similar question last year and did not get any 
useful responses.
I couldn't even find a way to import a single custom CRS other than manually 
creating and pasting in the wkt.
Might be a good feature request.
There is already  something similar from 2013 on the future release - nice to 
have list, though a bit more specific, possibly a good indication that it is 
not currently possible.
https://github.com/qgis/QGIS/issues/17309


Michael Dufty
From: Qgis-user  On Behalf Of BJJia
Sent: Wednesday, 24 March 2021 3:47 PM
To: qgis-user 
Subject: [Qgis-user] Batch import custom projections

Hi community,

Is there any method to define multiple custom projections at once? I know how 
to define custom projection, but it seems I can only define one projection at 
one time. I have a long list of projections in WKT format 
(https://raw.githubusercontent.com/USGS-Astrogeology/GDAL_scripts/master/OGC_IAU2000_WKT_v2/IAU2000_v2.wkt).

Thanks!

Bojun Jia
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[Qgis-user] Layout export images not cropping to content with outside grid labels

[Michael Dufty]

Hi,
I’m having an issue where if I export a layout as image, and tick the crop to 
content option, the result is not cropped to the content, but has considerable 
white space.
It seems to only happen where I have a grid with coordinates labelled on the 
outside.

It looks like QGIS is cropping to about where the coordinate labels would be if 
they were perpendicular to the edge of the map, but since I have them parallel 
with the map edge, a large white space is created.
Has anyone else come across this?  I can’t find any settings in the grid or map 
for this.

I have found a workaround, if I select to draw coordinate labels on the inside, 
then give them a negative distance to the map frame it all works as I think it 
should.

Michael Dufty

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Re: [Qgis-user] Do GPX files contain CRS information?

[Michael Dufty]

Since GPX (and KML) always use WGS84, I’ve been meaning to put in a feature 
request for QGIS to automatically select this when exporting to those formats.  
Currently it’s quite an unfriendly experience to export to these formats from 
QGIS as there are lots of options, many of which (like choosing an unsuitable 
CRS) will give you a file that really doesn’t work.

It does look like someone else already did this 7 years ago and it is on the 
“nice to have list”

https://github.com/qgis/QGIS/issues/17081

Michael Dufty

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Re: [Qgis-user] QGIS 3.18.0 and QGIS 3.14.4 (LTR) packages released and OSGeo4W reboot

[Michael Dufty]

>Long story short: you cannot upgrade from old installs and have to remove and 
>reinstall or use a separate directory.

To make it even shorter, can you make a recommendation of what to do?
If we don't need point clouds, can we just wait and eventually OSGEO4W will 
catch up, or are we going to eventually have to uninstall and reinstall anyway.

On past evidence windows 10 will screw up all the default apps and icons if I 
uninstall and reinstall, so I'll probably wait if that is going to work 
eventually.



Michael Dufty
Senior Environmental Engineer


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Re: [Qgis-user] saving all temporary layers?

[Michael Dufty]

Not exactly what you are asking for, so it may not suit, but I find the “memory 
layer saver” plugin invaluable.
When using this memory layers are not lost when you close QGIS

The plugin description says
“Makes layers with memory data providers persistent
so that they are restored when a project is closed and reopened.
The memory provider data is saved in a portable binary format (QDataStream)
that is saved with extension .mldata alongside the project file.”

I’m not sure if the .mldata file is useful as an export format.

It also does not seem to work with temporary raster files.

You can drag and drop memory layers from one QGIS instance to another (at least 
in 3.16).  They will then persist separately in both QGIS files if you have the 
memory layer saver plugin installed.

Michael Dufty

From: Qgis-user  On Behalf Of David Strip
Sent: Friday, 22 January 2021 2:42 AM
To: qgis-user 
Subject: [Qgis-user] saving all temporary layers?

Before I write my own, does anyone have a script to share (processing or 
otherwise) that saves all temporary layers in a project, preferably to a 
geopackage?
Thanks
David
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Re: [Qgis-user] Volume calculation - Reg

[Michael Dufty]

Just tried a few datasets in 3d faces and they triangulate beautifully in 3.16. 
 For some reason need to import from dwg instead of dxf, or re-export to gpkg 
before the tool will let me use the intrinsic z data, but really works very 
nicely.

Michael Dufty
From: Qgis-user  On Behalf Of Kirk Schmidt
Sent: Friday, 18 December 2020 9:41 PM
To: qgis-user@lists.osgeo.org
Subject: Re: [Qgis-user] Volume calculation - Reg


Hi Mike:

I usually convert the contours or breaklines into a point layer and then 
generate a dem from that.  This is not a precise methodology but it would 
depend on what you are trying to do and the precision of the underlying data.

Kirk Schmidt
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Re: [Qgis-user] Volume calculation - Reg

[Michael Dufty]

Excellent, I hadn’t tried it since 3.16, will try again.
Unfortunately the problem with using interpolation in model builder still seems 
like it might be difficult to fix.
https://github.com/qgis/QGIS/issues/30029

Michael Dufty

From: Vincent Cloarec 
Sent: Friday, 18 December 2020 9:55 PM
To: Michael Dufty 
Cc: Nicolas Cadieux ; Abhi Shek 
; qgis-user@lists.osgeo.org
Subject: Re: [Qgis-user] Volume calculation - Reg

TIN interpolation was improved in the 3.16 release. Quite crashes were fixed.
Please, report any issues in github.
Regards.

Vincent.


Le ven. 18 déc. 2020 à 05:29, Michael Dufty 
mailto:mdu...@mbsenvironmental.com.au>> a écrit 
:
The links for Nicolas are quite useful, but I think to create a raster DEM from 
vector lines you probably need to use the interpolate triangulation with 
breaklines or structure lines.
The dialogue takes a bit of getting used to, you need to choose the layer the 
data will come from, click + then in the box below choose whether the layer is 
being used for points, breaklines or structure lines.

I’ve had major issues with the interpolation crashing QGIS if I try to used it 
with breaklines for complex imported data, but it seems to work OK for simple 
test geometries, and may be good for a simple excavation.

I’d be interested to know if anyone has had success with interpolation using 
breaklines for more complex data, I’ve had to resort to other software trying 
to import DEM supplied as dxf 3d faces, but maybe I’m missing a basic step like 
fixing geometry or removing duplicates.

From: Qgis-user 
mailto:qgis-user-boun...@lists.osgeo.org>> 
On Behalf Of Nicolas Cadieux
Sent: Friday, 18 December 2020 12:04 AM
To: Abhi Shek mailto:psn.abhis...@gmail.com>>
Cc: qgis-user@lists.osgeo.org<mailto:qgis-user@lists.osgeo.org>
Subject: Re: [Qgis-user] Volume calculation - Reg

This should help

https://youtu.be/EerXfUf-aHo

https://www.pointsnorthgis.ca/blog/how-to-calculate-surfacecut-volume-qgis-advanced/
Nicolas Cadieux
https://gitlab.com/njacadieux

Le 17 déc. 2020 à 04:57, Abhi Shek 
mailto:psn.abhis...@gmail.com>> a écrit :

Sir,
I invite your kind attention to the above subject. I am a beginner in qgis.
I want to create a raster DEM using Vector Lines.
In a nutshell, I want to calculate the planned excavated volume.
please guide me in this matter.

--
with warm regards,
P S N Abhishek,
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[Qgis-user] Sharing a custom User CRS

[Michael Dufty]

Hi,
I’ve just figured out how to set up an oblique Mercator custom CRS to allow 
visualising data in local mine grids in QGIS.
I’d now like to share the CRS with other users.
At the moment I have sent the wkt definition as a text file with instructions 
on how to add it in settings-custom projections, but that seems a bit awkward.
Does anyone know a better way to do it?

I have also exported data with a .prj file, but although this works for the 
exported dataset I don’t see any way to save the CRS from the prj into QGIS for 
use with other data.

Michael Dufty
Senior Environmental Engineer

[cid:image001.jpg@01D6CD8B.FF1A4BF0]
MBS ENVIRONMENTAL
4 Cook Street, West Perth  WA 6005

t:+61 8 9226-3166
f:+61 8 9226-3177

e:   mdu...@mbsenvironmental.com.au<mailto:mdu...@mbsenvironmental.com.au>
w:   www.mbsenvironmental.com.auhttp://www.mbsenvironmental.com.au/>

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Re: [Qgis-user] Set map grid CRS to follow map CRS?

[Michael Dufty]

Thanks Yoann,
Exactly what I was looking for.  I will see if I can add this to the user guide 
in 17.2.2.6.1.  It looks like leaving it blank follows the Map CRS though, not 
the project CRS.
It would be nice if the CRS selection control for the grid was similar to that 
for the map, with a drop down allowing to choose to follow the map, or the 
project, or set manually.
An easier but helpful change might be for the button to display “Map CRS” 
rather than “Change…” when nothing is selected.


Michael Dufty

From: Yoann QUENACH DE QUIVILLIC 
Sent: Monday, 21 September 2020 5:29 PM
To: Michael Dufty 
Cc: qgis-user@lists.osgeo.org
Subject: Re: [Qgis-user] Set map grid CRS to follow map CRS?

Hi Michael.

You have to keep it blank. If no CRS is set for the grid, it uses the map's 
CRS. When you first add the grid to the map, its CRS is unset by default (at 
least in QGIS 3.10).
However, there is not an obvious option to clear the grid CRS once you have set 
it.
The trick is to select a section (i.e "Geographic Coordinate Systems") in the 
CRS Selector instead of a specific CRS, then to click OK.

Regards

Le lun. 21 sept. 2020 à 06:38, Michael Dufty 
mailto:mdu...@mbsenvironmental.com.au>> a écrit 
:
I have set up some layout templates including a map grid.
This works quite nicely, except I seem to have to choose a fixed CRS for the 
map grid.
Is there any way to tell the map grid to use the CRS of the map it is attached 
too?  There doesn’t seem any obvious place to enter an expression, which seems 
unlike QGIS.
It seems like it must be the most common choice of map grid people would want.  
Am I just looking in the wrong place or is it a missing feature?

Michael Dufty
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[Qgis-user] Set map grid CRS to follow map CRS?

[Michael Dufty]

I have set up some layout templates including a map grid.
This works quite nicely, except I seem to have to choose a fixed CRS for the 
map grid.
Is there any way to tell the map grid to use the CRS of the map it is attached 
too?  There doesn't seem any obvious place to enter an expression, which seems 
unlike QGIS.
It seems like it must be the most common choice of map grid people would want.  
Am I just looking in the wrong place or is it a missing feature?

Michael Dufty
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Re: [Qgis-user] User setup for PostGres/PostGis use with QGIS

[Michael Dufty]

Good point on the security, so far we’ve been relying on the server only being 
accessible from our network, but would be good to be able to open that up.
Other than that would simultaneous uses of the same account be likely to cause 
issues.

Michael Dufty

From: Qgis-user  On Behalf Of Jeff Hubbs
Sent: Sunday, 26 April 2020 1:45 AM
To: qgis-user@lists.osgeo.org
Subject: Re: [Qgis-user] User setup for PostGres/PostGis use with QGIS

Agree, strongly. Even better to have an independent authentication system (e.g. 
LDAP) that everything uses but at minimum, separate PostgreSQL accounts for 
everybody is highly recommended.

On 4/25/20 11:39 AM, Jo wrote:
From a security perspective you definitely want to create a distinct user 
account for each user. What if a user leaves your organisation? Will you update 
the password and have to communicate it to everyone before they can do further 
work? That's more cumbersome than doing it right from the start.

After a while you may also discover that some users will need different rights.

Jo

On Sat, Apr 25, 2020 at 12:23 PM Michael Dufty 
mailto:mdu...@mbsenvironmental.com.au>> wrote:
I’m looking at setting up a postGIS server for use to store mapping files to 
use with QGIS.
We have about a dozen users who will all need to be able to edit layers and 
save new layers to the server, and any new layers they create need to be 
editable by other users.

Can anyone advise if having everyone use the same user account would be a good 
idea?  Since everyone will have the same privileges this would seem to simplify 
setup.  Often there will be different people editing the same QGIS project at 
different times, and I think it would help with that, although it looks like we 
would need to use the same id for the authentication on every computer if we 
don’t want password prompts all the time.  I’m just concerned this may cause 
issues with the server if the same user account is accessing the database from 
different locations at the same time.

As I understand it the alternative would be to create a role that all accounts 
are members of, and alter the default privileges for each account so the role 
gets access to any new tables created, which would be a bit of a pain to set up 
for lots of accounts, but probably OK.

I have struggled with this in the past, and the consultant who set up a similar 
server for us in  the past to use with Manifold gave up on getting permissions 
to work and just made every account a superuser.  This doesn’t seem ideal, but 
hasn’t caused any issues in over 10 years.


Michael Dufty

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[Qgis-user] User setup for PostGres/PostGis use with QGIS

[Michael Dufty]

I'm looking at setting up a postGIS server for use to store mapping files to 
use with QGIS.
We have about a dozen users who will all need to be able to edit layers and 
save new layers to the server, and any new layers they create need to be 
editable by other users.

Can anyone advise if having everyone use the same user account would be a good 
idea?  Since everyone will have the same privileges this would seem to simplify 
setup.  Often there will be different people editing the same QGIS project at 
different times, and I think it would help with that, although it looks like we 
would need to use the same id for the authentication on every computer if we 
don't want password prompts all the time.  I'm just concerned this may cause 
issues with the server if the same user account is accessing the database from 
different locations at the same time.

As I understand it the alternative would be to create a role that all accounts 
are members of, and alter the default privileges for each account so the role 
gets access to any new tables created, which would be a bit of a pain to set up 
for lots of accounts, but probably OK.

I have struggled with this in the past, and the consultant who set up a similar 
server for us in  the past to use with Manifold gave up on getting permissions 
to work and just made every account a superuser.  This doesn't seem ideal, but 
hasn't caused any issues in over 10 years.


Michael Dufty

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Re: [Qgis-user] Options when loading layers into PostGIS with DBManager

[Michael Dufty]

Thanks Bo,
What are the risks of DB Manager?  I’m using it exactly because it is point and 
click, the layers to be loaded are saved all over the place and need to be 
found and identified one by one in QGIS projects, so seems much easier to do 
from within qgis if it is reasonably safe.  I figure they can always be 
reloaded from the original source if something goes wrong.

Michael Dufty
Senior Environmental Engineer

[cid:image001.jpg@01D61741.BF897CA0]
MBS ENVIRONMENTAL
4 Cook Street, West Perth  WA 6005

t:+61 8 9226-3166
f:+61 8 9226-3177

e:   mdu...@mbsenvironmental.com.au<mailto:mdu...@mbsenvironmental.com.au>
w:   www.mbsenvironmental.com.auhttp://www.mbsenvironmental.com.au/>
Disclaimer:
The information contained in this message is intended for those to whom it is 
addressed. It may contain confidential or privileged information and if you are 
not the intended recipient, you must not copy, distribute or take any action in 
reliance on it. If you received this message in error please destroy it and 
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Re: [Qgis-user] Options when loading layers into PostGIS with DBManager

[Michael Dufty]

Answering my own question again.
It does look like leaving everything alone works pretty well.
Primary key unchecked results in a primary key being set up with the id column 
as shown in grey.  This caused a problem when the layer had a pre-existing 
non-unique id column.  Works fine if the existing id column has unique values, 
or does not exist.
Leaving the geometry column unticked seems to create a geom column (as shown in 
grey).
If a spatial index is needed and wasn’t ticked, a warning will show in db 
manager afterwards and it is easy to create one from there.

Just needs the documentation update to say not to worry about it.  A bit like 
the lack of documentation on how to upgrade an existing install.  It doesn’t 
seem to matter what you do, but you can waste a lot of time trying to look it 
up if too cautious.

Michael Dufty
Senior Environmental Engineer

[cid:image001.jpg@01D6169E.C91D6900]
MBS ENVIRONMENTAL
4 Cook Street, West Perth  WA 6005

t:+61 8 9226-3166
f:+61 8 9226-3177

e:   mdu...@mbsenvironmental.com.au<mailto:mdu...@mbsenvironmental.com.au>
w:   www.mbsenvironmental.com.auhttp://www.mbsenvironmental.com.au/>
Disclaimer:
The information contained in this message is intended for those to whom it is 
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reliance on it. If you received this message in error please destroy it and 
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and any attachments are virus free; we do not accept responsibility for any 
virus infections caused by receipt of this message

From: Michael Dufty 
Sent: Sunday, 19 April 2020 4:43 PM
To: qgis-user@lists.osgeo.org
Subject: [Qgis-user] Options when loading layers into PostGIS with DBManager

Hi,
I am trying out saving data in PostGIS, and have got stuck on the upload 
“import layer/file” dialog in DB Manager.

Can anyone recommend a good reference on what options should be selected?
It seems to fall into a gap between PostGIS documentation and QGIS 
documentation and I can’t find any information on what should be selected in 
what circumstances.

In particular
Primary key – should this be ticked and the existing id field selected? What 
happens if it is left unticked?
Geometry column – is this needed? Objects still seem to have geometry if it is 
left out.
Create spatial index – this sounds like a good idea, but the one youtube 
tutorial I found (Klas Karlson) he left it unticked and said the layer already 
had everything.  Is it needed for some source formats and not others eg 
shapefile vs geopackage?

Convert field names to lower case doesn’t sound very useful, but I presume it 
is there for a reason, does anyone know the circumstances that would be needed?

Cheers,


Michael Dufty
Senior Environmental Engineer

[cid:image001.jpg@01D6169E.C91D6900]
MBS ENVIRONMENTAL
4 Cook Street, West Perth  WA 6005

t:+61 8 9226-3166
f:+61 8 9226-3177

e:   mdu...@mbsenvironmental.com.au<mailto:mdu...@mbsenvironmental.com.au>
w:   www.mbsenvironmental.com.auhttp://www.mbsenvironmental.com.au/>
Disclaimer:
The information contained in this message is intended for those to whom it is 
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reply to the sender immediately or contact Martinick Bosch Sell Pty Ltd. on +61 
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Re: [Qgis-user] Options when loading layers into PostGIS with DBManager

[Michael Dufty]

Thanks Jorge,
The DB manager also 'just works' apparently regardless of which boxed I tick.  
I'd just like to know what is going on or if I'm setting myself up for a 
problem later on if I load up 200 layers with the wrong boxes ticked.

Looking more closely, it has got text greyed out if you don't check a box, 
which may mean it is setting it to the defaults shown, and you only check the 
box if you want to change it.

It would be nice to know more rather than guessing.


From: Jorge Gustavo Rocha 
Sent: Sunday, 19 April 2020 5:41 PM
To: qgis-user@lists.osgeo.org 
Subject: Re: [Qgis-user] Options when loading layers into PostGIS with DBManager


Hi Michael,

An alternative is to use the "Browser panel". I use it to drag layers from the 
Layer panel into Postgresql. You don't have to choose any parameters. It just 
works.

Regards,

Jorge Gustavo

On 19/04/20 09:42, Michael Dufty wrote:

Hi,

I am trying out saving data in PostGIS, and have got stuck on the upload 
“import layer/file” dialog in DB Manager.



Can anyone recommend a good reference on what options should be selected?

It seems to fall into a gap between PostGIS documentation and QGIS 
documentation and I can’t find any information on what should be selected in 
what circumstances.



In particular

Primary key – should this be ticked and the existing id field selected? What 
happens if it is left unticked?

Geometry column – is this needed? Objects still seem to have geometry if it is 
left out.

Create spatial index – this sounds like a good idea, but the one youtube 
tutorial I found (Klas Karlson) he left it unticked and said the layer already 
had everything.  Is it needed for some source formats and not others eg 
shapefile vs geopackage?



Convert field names to lower case doesn’t sound very useful, but I presume it 
is there for a reason, does anyone know the circumstances that would be needed?



Cheers,





Michael Dufty

Senior Environmental Engineer



[cid:part1.109C90E4.CCE4590B@geomaster.pt]

MBS ENVIRONMENTAL
4 Cook Street, West Perth  WA 6005

t:+61 8 9226-3166
f:+61 8 9226-3177



e:   mdu...@mbsenvironmental.com.au<mailto:mdu...@mbsenvironmental.com.au>
w:   www.mbsenvironmental.com.au

Disclaimer:
The information contained in this message is intended for those to whom it is 
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reply to the sender immediately or contact Martinick Bosch Sell Pty Ltd. on +61 
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[Qgis-user] Options when loading layers into PostGIS with DBManager

[Michael Dufty]

Hi,
I am trying out saving data in PostGIS, and have got stuck on the upload 
“import layer/file” dialog in DB Manager.

Can anyone recommend a good reference on what options should be selected?
It seems to fall into a gap between PostGIS documentation and QGIS 
documentation and I can’t find any information on what should be selected in 
what circumstances.

In particular
Primary key – should this be ticked and the existing id field selected? What 
happens if it is left unticked?
Geometry column – is this needed? Objects still seem to have geometry if it is 
left out.
Create spatial index – this sounds like a good idea, but the one youtube 
tutorial I found (Klas Karlson) he left it unticked and said the layer already 
had everything.  Is it needed for some source formats and not others eg 
shapefile vs geopackage?

Convert field names to lower case doesn’t sound very useful, but I presume it 
is there for a reason, does anyone know the circumstances that would be needed?

Cheers,


Michael Dufty
Senior Environmental Engineer

[cid:image001.jpg@01D61669.130A2F20]
MBS ENVIRONMENTAL
4 Cook Street, West Perth  WA 6005

t:+61 8 9226-3166
f:+61 8 9226-3177

e:   mdu...@mbsenvironmental.com.au<mailto:mdu...@mbsenvironmental.com.au>
w:   www.mbsenvironmental.com.auhttp://www.mbsenvironmental.com.au/>
Disclaimer:
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Re: [Qgis-user] QGIS in the commercial world

[Michael Dufty]

Sustaining membership works  out a bit steep for us if you follow the guideline 
– about 10 times what we currently pay for commercial software (Manifold).
Is it reasonable to interpret number of employees as GIS users rather than 
total employees?
I see my local council is on there as small, and I’m sure they have more than 
10 employees.

Obviously no limits apply if we go with donations without membership.

Michael Dufty

From: Anita Graser 
Sent: Wednesday, 15 April 2020 1:47 PM
To: i...@jcis.net.au; qgis-user@lists.osgeo.org
Subject: Re: [Qgis-user] QGIS in the commercial world


Dear Iain,

Yes, QGIS has an entity: QGIS.ORG is the worldwide association of QGIS users 
and developers. QGIS.ORG is constituted as a Swiss ‘association’ 
(https://qgis.org/en/site/getinvolved/governance/charter.html) but it is not a 
registered charity.

To help support QGIS, organizations are invited to become sustaining members of 
QGIS.ORG. The details of our sustaining membership program are described in: 
https://qgis.org/en/site/getinvolved/governance/sustaining_members/sustaining_members.html

You can also see who's already supporting QGIS: 
https://qgis.org/en/site/about/sustaining_members.html

Regards,

Anita

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Re: [Qgis-user] Sharing project files

[Michael Dufty]

I find the “Memory Layer Saver” plugin very useful, but it doesn’t seem to work 
for raster layers, so may not work for Dave in this case.
If I recall correctly I think the make permanent button may not appear on 
raster layers either.
Generating contours to a temporary file also seems to be a special case in that 
they save to a temporary file rather than a memory layer so neither of the 
above options work.
In these cases you need to “save as” the temporary layers to preserve them (or 
create them as permanent layers in the first place using the processing 
options).

Michael Dufty
Senior Environmental Engineer

[cid:image001.jpg@01D60CBC.8E1516A0]
MBS ENVIRONMENTAL
4 Cook Street, West Perth  WA 6005

t:+61 8 9226-3166
f:+61 8 9226-3177

e:   mdu...@mbsenvironmental.com.au<mailto:mdu...@mbsenvironmental.com.au>
w:   www.mbsenvironmental.com.auhttp://www.mbsenvironmental.com.au/>
Disclaimer:
The information contained in this message is intended for those to whom it is 
addressed. It may contain confidential or privileged information and if you are 
not the intended recipient, you must not copy, distribute or take any action in 
reliance on it. If you received this message in error please destroy it and 
reply to the sender immediately or contact Martinick Bosch Sell Pty Ltd. on +61 
8 9226 3166 immediately. All care has been taken to ensure that this message 
and any attachments are virus free; we do not accept responsibility for any 
virus infections caused by receipt of this message

From: Bernd Vogelgesang 
Sent: Tuesday, 7 April 2020 1:10 AM
To: qgis-user@lists.osgeo.org
Subject: Re: [Qgis-user] Sharing project files


Hi Dave,

indeed, temporary layers are only .. well .. temporary.
There are two ways to make them permanent (afaik):

a) Install the temporary layer saver plugin. This will save those layers within 
the project file
b) Don't know if this option already exists in 3.4, but in the context menu of 
a temporary layer, there should be the option "Make permanent ...", so you can 
save it to disk. If it is not present in 3.4, update to 3.10 LTR or to the 
latest 3.12


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[Qgis-user] Always render as raster losing opacity control and simplify vector layers

[Michael Dufty]

I’ve had an interesting couple of days dealing with PDF sizes.  We have a very 
large vector layer of flood model output, being put into an A3 map covering a 
large area.
Initially this produced a 5MB ish PDF, but at some stage the PDF size jumped to 
30MB.  It looks like the new “simplify geometries to reduce output size” option 
was not working.
We were able to get around this by forcing the layer to render as a raster in 
the layer properties.
A couple of days later we decided the layer should have 100% opacity instead of 
80%.
The opacity displayed correctly in the main map and layout, but in the PDF 
exports it stayed stubbornly at 80%.
Turning off the force to render as raster allowed the opacity to display 
correctly again.  The file size stayed low too, so simplify geometries seems to 
work again.

At this stage we have solved the practical problem, but I’m still curious about 
the underlying issue.

Switching back to render as raster broke it again.
Re-adding the shapefile did not work.
Forcing another layer to render as raster resulted in both correct behaviour on 
the new layer, and fixing the problem on the old layer.
Turning off the forcing on the second layer, results in the first layer playing 
up again.

Initial issues were using 3.10.1 now on 3.12.

Anyone have a clue what might be going on?
Seems like there might be a cached version of the rasterization somewhere, but 
it recurs even if I change the colour.
I notice raster layers have opacity set in a different place to vector layers, 
so perhaps the opacity level for the generated raster layer has somehow been 
saved somewhere.

Michael Dufty

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