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2 votes

Errors building GRASS

I simply had to upgrade flex to version 2.6.4. Now grass-8.3.0 compiles perfectly.
user3063547's user avatar
2 votes
Accepted

Why stream numbers generated by r.stream.order go one after other, not succeeding

The r.watershed has the added feature that it can produce "half basins" (each basin split in the middle by the enclosed drainage line). This is what causes even numbering of cat values for ...
Micha's user avatar
  • 15.7k
2 votes
Accepted

Missing tool `i.points.auto` in the QGIS GRASS provider

i.points.auto: is a plugin and it's not part of the GRASS core. It must be installed separately. More info here: https://grass.osgeo.org/grass83/manuals/addons/ Thanks to user2856 for the ...
Comrade Che's user avatar
  • 7,271
1 vote
Accepted

Access Terminal Commands with QGIS

Yes this is possible. I have exact same scenario as you and wanted to achieve the same thing. (Worth noting im on a windows machine, running OSGEO installation of QGIS). You will need to know the path ...
nr_aus's user avatar
  • 3,576
1 vote

QGIS Union is slow. How to speed up or which alternative to use, creating the same output?

You could give geofileops a try. This is a python library that tries to speed up processing of larger files and it supports performing a union. The result for your sample file is the same. Note: ...
Pieter's user avatar
  • 3,189
1 vote
Accepted

GRASS r.viewshed not working with elevation? - PyQGIS

The maximum distance is computed as a 2D distance, elevation is not taken into account.
Anna's user avatar
  • 901
1 vote

Open source tools to merge categorical raster classes with neighboring class based on area

I ended up using GDAL Sieve. It is much faster than the GRASS r.reclass.area method=rmarea approach as it works directly on the raster. The "-nomask" option can be used to handle the said &...
Brent Edwards's user avatar
1 vote
Accepted

GRASS r.horizon returns nonsense

r.horizon has been fixed, it will be part of upcoming GRASS 8.3.2 release.
Anna's user avatar
  • 901
1 vote
Accepted

What is the right way to dissolve vector features in GRASS GIS on attribute values of one column summarizing or averaging others?

I believe v.dissolve in latest GRASS (upcoming 8.4) can do that, see examples on man page: https://grass.osgeo.org/grass84/manuals/v.dissolve.html
Anna's user avatar
  • 901
1 vote

Use v.clean function from GRASS in Jupyter Notebook

Yes, you can run GRASS from a notebook, see some resources here: https://grasswiki.osgeo.org/wiki/GRASS_GIS_Jupyter_notebooks You can try GRASS online in mybinder.org (be patient, can take time to ...
Anna's user avatar
  • 901
1 vote
Accepted

Fatal Error when trying to download addons for GRASS 8.3.1

Solved. Should add --security-opt seccomp=unconfined while running the container. Image was OK.
Nikolay Yasinskiy's user avatar
1 vote

Fatal Error when trying to download addons for GRASS 8.3.1

As per your comment, you are using docker here. Fetch latest GRASS GIS 8.3 docker image based on Debian (see here for choices): docker pull osgeo/grass-gis:releasebranch_8_3-debian Run the docker ...
markusN's user avatar
  • 13k
1 vote
Accepted

Cannot install GRASS addons in GRASS 8.2 (Ubuntu jammy)

Thanks to this answer by Veronica Andreo in the GRASS user list, a workaround is to download the r.clip folder from the GRASS GIS Addons Code Repository and install the extension using the path to the ...
Ernesto561's user avatar
1 vote

PCRaster Tools, GRASS and SAGA installation on QGIS 3.34.2 for MacOS

The officially distributed QGIS.app for Mac is presently quite outdated, with respect to the bundled software (GDAL, GRASS GIS etc.). It is also built only for x86_64 Intel machines, which make it ...
nilason's user avatar
  • 46
1 vote

r.cross: max number of input map layers?

I think that requirement is in relation to this sentence further down in options...The program will be run non-interactively if the user specifies the names of between 2-10 raster map layers be used ...
Walshe_d's user avatar
  • 729
1 vote
Accepted

Creating relation for duplicate lines

Extract the duplicate features to a new (temporary) layer using "Extract by expression" with the expression overlay_equals(@layer) Run "Join attributes by location" using your ...
winnewoerp's user avatar
  • 1,504
1 vote

GRASS build polylines based on category/ID (v.net.distance)

Solution here is to use the v.net.distance -l flag: Write each output path as one line, not as original input segments.
Anna's user avatar
  • 901
1 vote
Accepted

Running GRASS GIS from PyCharm

I suggest to try the instructions for PyCharm on the GRASS wiki: https://grasswiki.osgeo.org/wiki/Tools_for_Python_programming#PyCharm_IDE
Anna's user avatar
  • 901
1 vote
Accepted

Getting errors on startup of GRASS

Check what's going on in the Data pane (should be on the top left). Perhaps you switched your current project (location). If you want to see the world map again, try to find project ...
Anna's user avatar
  • 901
1 vote
Accepted

QGIS Raster resampling without label changes

Change the resampling method from the default average to something that doesn't return a floating point value like min, max or mode.
user2856's user avatar
  • 67.3k
1 vote

How to get centerline of the mask images

Since your first tag is grass-gis, I suggest you try the GRASS module v.centerline. You'll have to perform the following steps: convert the raster to a polygon vector (r.to.vect) extract the boundary ...
Micha's user avatar
  • 15.7k

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