[GRASS-web] r.sample.category errors

Markus Neteler neteler at osgeo.org
Thu Jan 21 14:26:02 PST 2021

Hi Mitchell,

As far as I can see there is an issue with the column name.


The naming convention for vector maps requires that map names start with a
character, not a number (map name scheme: [A-Za-z][A-Za-z0-9_]*).

I wonder if this also applies to column name? Perhaps try to rename the

Just as a quick European midnight guess,


Mitchell Meads <mitchell.meads at tamu.edu> schrieb am Do., 21. Jan. 2021,

> Good afternoon GRASS GIS developers,
> I'm currently trying to run the futures extension through GRASS GIS and
> have been following the wikipages manual on how to complete the exercise
> but I'm having an error with the r.sample.category module and am curious if
> one of you could point me in the right direction.
> I've developed all the necessary predictor rasters and the response
> variable raster for my study area but the module is giving me the same
> error, no matter what kind of troubleshooting I attempt. I thought that
> maybe I had to reassign my null and integer values but even after I tried
> that, I couldn't get the tool to run. It gives me this "Error while
> executing: "CREATE TABLE output_filename (cat integer, input_filename
> integer).
> I've attached a screenshot of the command output so you can see all the
> messages GRASS GIS gives me but I'm not sure what the issue could be. If
> you could please assist me, that would be greatly appreciated!
> Cheers,
> Mitchell Meads, PhD Student
> Texas A&M University at Galveston
> Marine & Coastal Management Sciences; CTBS <http://www.tamug.edu/ctbs/>
> Email: mitchell.meads at tamu.edu
> _______________________________________________
> grass-web mailing list
> grass-web at lists.osgeo.org
> https://lists.osgeo.org/mailman/listinfo/grass-web
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.osgeo.org/pipermail/grass-web/attachments/20210121/81bcc4e8/attachment.html>

More information about the grass-web mailing list