Roger:
> Is there a shell-level utility in GRASS to check whether
> the region of a raster is equal to the current working
> region - the function could call that and create a copy
> of the required raster in current resolution if they differ?
no, but:
g.region -g
r.info -g $MAPNAME
and compare.
see also WIND_OVERRIDE in the GRASS variables.html help page, and
today's i.fusion.brovey script in SVN.
It lets you change the region internal to your process/script.
Hamish
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