[GRASS-user] Mosaic

Nikos Alexandris nikos.alexandris at felis.uni-freiburg.de
Fri Aug 8 08:26:02 EDT 2008

On Fri, 2008-08-08 at 08:57 -0300, Raphael Saldanha wrote:
> Hi!
> A newbie doubt: I have to make a mosaic with 2 satellite images
> (CBERS). The border values are "0". What is the procedure? (the images
> are already on grass).
> Raphael Saldanha

Hi Raphael.

If your images are correctly georeferenced then you only need to use
r.patch or r.mapcalc.

Set the extent of the computational region with g.region first, for
g.region rast=satimage1,satimage2 -pa

Then patch:
r.patch in=satimage1,satimage2 out=mosaic

Kind regards, Nikos.

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