[GRASS-user] Subset several bands of data at one go

Helmut Kudrnovsky hellik at web.de
Tue Mar 8 16:28:11 EST 2011

>   But with this I can subset one band data at a time. Is it somehow possible
>to use i.group and region definition to obtain subsets of all bands?
>Scripting might be an answer but I have no much idea about it.

what about working with different computational regions?

http://grass.osgeo.org/grass64/manuals/html64_user/rasterintro.html :

As a general rule in GRASS:

*  Raster output maps have their bounds and resolution equal to those
of the current computational region.

*  Raster input maps are automatically cropped/padded and rescaled
(using nearest-neighbour resampling) to match the current region.

*  Raster input maps are automatically masked if a raster map named
 MASK exists. The MASK is only applied when reading maps
 from the disk.

so you can do calculations/run modules in different computational region without
extracting of many subsets of your data before.

best regards

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