Hi all,
i'm using GRASS 6.2 for developing a Web Processing Service.
One of the operations offered by the service takes two raster maps as
inputs.
The raster map resulting from this operation would have different
spatial extents based on the input maps: the result would have the
extent equal to the extent of one of the two input maps, or equal to the
union of the extents of the two input maps or equal to the intersection
of the extents of the two raster maps.
In order to develop the service i need to manage these four cases by
changing the GRASS region.
Supposing that the input rasters are "raster1" and "raster2", the
possible configurations are:
1. region = raster1 --> g.region rast=raster1
2. region = raster2 --> g.region rast=raster2
3. region = the union of raster1 and raster2 --> g.region
rast=raster1,raster2
4. region = the intersection of raster1 and raster2 --> ?
As far as i see, using the g.region command, there is no way to specify
the last point except to manually set the nord,sud,ovest and east
values, but unfortunately i can not use this way.
Is there any other command in GRASS that i can use instead of g.region
to set the current region as the intersection of two rasters?
Best regards
Raffaello Brondi
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