Hamish,
Thanks for the debugging tips - they are helpful. It looks like it was a
problem with my variable names. I've been getting confused about when to
prefix the variable name with a "$". Dropping the "$" from the raster
names in i.group seems to have fixed the problem.
I have i.group working but now I realize there is another problem I need
to solve before the script will work. Slowly learning...
Ned
Hamish wrote:
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.
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