[GRASS-user] v.surf.idw Not Working

[Micha Silver]

On 2/15/21 8:51 PM, Michaela Lobato wrote:
> Thank you for your message. I was able to getv.surf.idw working. I 
> posted the original question because I am struggling to use the 
> r.mblend add-on module. I have reached out and worked with the 
> r.mblend authors on Github but still haven't been able to solve my 
> issue. The error I am getting has to do with v.surf.idw:


So you're trying to blend two overlapping rasters of different 
resolution? Can we see the output of r.info for both of the rasters?


>
> Traceback (most recent call last):
>   File 
> "/Users/michaelalobato/Library/GRASS/7.8/Modules/scripts/r.mblend", 
> line 282, in <module>.
>     main()
>   File 
> "/Users/michaelalobato/Library/GRASS/7.8/Modules/scripts/r.mblend", 
> line 257, in main
>     gscript.run_command('v.surf.idw', input=points_edges, 
> column=COL_VALUE,
>   File 
> "/Applications/GRASS-7.8.app/Contents/Resources/etc/python/grass/script/core.py", 
> line 441, in run_command
>     return handle_errors(returncode, returncode, args, kwargs)
>   File 
> "/Applications/GRASS-7.8.app/Contents/Resources/etc/python/grass/script/core.py", 
> line 342, in handle_errors
>     raise CalledModuleError(module=None, code=code,
> grass.exceptions.CalledModuleError: Module run None v.surf.idw 
> input=tmp_3289117 column=value output=tmp_3289118
>  power=2 npoints=50 ended with error
> Process ended with non-zero return code -9. See errors in the (error) 
> output.
> WARNING: No data base element files found
> WARNING: No data base element files found
> WARNING: No data base element files found
> WARNING: No data base element files found
> WARNING: No data base element files found
> WARNING: Table <tmp_3289111> linked to vector map <tmp_3289111> does 
> not  exist
>
> The author said that "/The |v.surf.idw| module is failing because it 
> can not find the attribute table of one the vector layers. This 
> probably means something is going on with the GRASS bank-end 
> database./" and requested the following information:
>
> db.connect -p
>
> >driver: sqlite
>
> >database: /Users/michaelalobato/Documents/Research/grassdata/newChampaign/test_champaign/sqlite/sqlite.db
>
> >schema:
>
> >group:
>
>
>
> sqlite3 
> /Users/michaelalobato/Documents/Research/grassdata/champaign/PERMANENT/sqlite/sqlite.db
>
> sqlite> .tables
>
> >sqlite>
>
>
>
> As you can see, when I try to list the existing tables, nothing comes 
> up. After this issue, I started working with just v.surf.idwto see if it
>

The sqlite database is empty since you probably have no vector layers in 
your mapset. That's not necessarily a problem.


> might be an issue with the module itself, but that seems to be working 
> fine. Does anyone have any suggestions as to how to solve the 
> v.surf.idw issue that I'm having within the mblend module?
>
>
> Thanks!
>
> Michaela
>
>
>
>
> -- 
> A. Michaela Lobato
> BS Systems Engineering and Design | Autonomous Systems and Robotics | 
> December 2019
> MS Systems and Entrepreneurial Engineering | Decision and Control | In 
> Progress
> Email: amlobat2 at illinois.edu <mailto:amlobat2 at illinois.edu> | Cell: 
> (815) 494-1111
>
-- 
Micha Silver
Ben Gurion Univ.
Sde Boker, Remote Sensing Lab
cell: +972-523-665918