[GRASS-user] Seg fault with i.group in script

[Hamish]

try running with the --verbose flag turned on.
also `g.gisenv set="DEBUG=5"`  (set back to 0 to turn them off)

can you change the top line of the shell script to be
#!/bin/sh -x

then you can follow the exact expansion of the shell variables
from among the debug noise.

probably python/bourne shell makes no difference; the imagary
library is not as robust as the raster one.

perhaps the band name is very long? only recently have a lot
of the i.* modules been updated to deal with that. Looks like
that was a year ago so should be ok in 6.4.0rc5.


make sure there are no @mapset in the map names.

...?


Hamish




Ned wrote:
> Hi - I have a script that uses
> i.group to group 6 bands but when it runs I get a
> Segmentation fault. If I run the same i.group command
> (without "$") in the terminal it works just fine. This is
> the i.group command I am using in the script:
> 
> i.group group=allBands subgroup=allBandSub
> input=$band1_corrected,$band2_corrected,$band3_corrected,
> $band4_corrected,$band5_corrected,$band6_corrected
> 
> Is there anything obviously wrong? I am running this on
> Ubuntu using GRASS 6.4.0 RC5
> 
> Would it make a difference if I converted the script to
> Python? I want to start learning how to write Python scripts
> and perhaps this is the time to learn.