[GRASS-user] Trouble using r.mblend

Hi,

I’m having trouble getting the r.mblend extension to work. I’m currently using GRASS v8.2.1 on linux (I’m running on Arch linux). When I run r.mblend with the following command:


r.mblend --verbose high=1m_DEM low=5m_DEM output=merged_DEM inter_points=80

It exits with the following error output:


[r.mblend] Interpolating smoothing surface. This might take a while…
Traceback (most recent call last):
File “/home/ryan/.grass8/addons/scripts/r.mblend”, line 332, in
main()
File “/home/ryan/.grass8/addons/scripts/r.mblend”, line 302, in main
gscript.run_command(
File “/opt/grass/etc/python/grass/script/core.py”, line 541, in run_command
return handle_errors(returncode, result=None, args=args, kwargs=kwargs)
File “/opt/grass/etc/python/grass/script/core.py”, line 429, in handle_errors
raise CalledModuleError(module=module, code=code, returncode=returncode)
grass.exceptions.CalledModuleError: Module run v.surf.idw input=tmp_2803617 column=value output=tmp_2803618 power=2 npoints=80 ended with an error.
The subprocess ended with a non-zero return code: -9. See errors above the traceback or 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_2803611> linked to vector map <tmp_2803611> does not
exist


The output of ‘r.info 1m_DEM’ is:
±---------------------------------------------------------------------------+
| Map: 1m_DEM Date: Sat Apr 29 06:51:13 2023 |
| Mapset: PERMANENT Login of Creator: ryan |
| Location: golspie |
| DataBase: /mnt/sdb2/grassdata |
| Title: |

Timestamp: none
Type of Map: raster Number of Categories: 395
Data Type: FCELL Semantic label: (none)
Rows: 10000
Columns: 15000
Total Cells: 150000000
Projection: OSGB36 / British National Grid
N: 910000 S: 900000 Res: 1
E: 295000 W: 280000 Res: 1
Range of data: min = -3.34 max = 394.81
Data Description:
generated by r.in.gdal
Comments:
r.in.gdal --overwrite -e -a input=“Golspie_Brora_1m_DEM.tif” output=\
“1m_DEM” memory=300 offset=0 num_digits=0
±---------------------------------------------------------------------------+

The output of ‘r.info 5m_DEM’ is:

±---------------------------------------------------------------------------+
| Map: 5m_DEM Date: Sat Apr 29 06:51:48 2023 |
| Mapset: PERMANENT Login of Creator: ryan |
| Location: golspie |
| DataBase: /mnt/sdb2/grassdata |
| Title: |

Timestamp: none
Type of Map: raster Number of Categories: 0
Data Type: FCELL Semantic label: (none)
Rows: 11000
Columns: 13000
Total Cells: 143000000
Projection: OSGB36 / British National Grid
N: 940000 S: 885000 Res: 5
E: 300000 W: 235000 Res: 5
Range of data: min = -1.49 max = 960.91
Data Description:
generated by r.in.gdal
Comments:
r.in.gdal --overwrite -e -a input=“Golspie_Brora_OS_5m_DEM.tif” outp\
ut=“5m_DEM” memory=300 offset=0 num_digits=0
±---------------------------------------------------------------------------+

I’ve already tried to reinstall r.mblend using g.extensions to no avail.

Thanks in advance for any help!

Cheers,
Ryan