[GRASS-user] Clipping rasters

[Nikos Alexandris]

On Tuesday 10 of August 2010 18:02:12 Martin Landa wrote:
> 2010/8/10 Nikos Alexandris <nikos.alexandris at felis.uni-freiburg.de>:
> >> >> # set the mask to the raster border
> >> >> r.mask border
> > 
> > #replace the above and use r.mapcalc instead:
> > r.mapcalc MASK=border
> 
> why?

Right. I should first ask what the values compose the raster that is to become 
a MASK. In the past I had problems with r.mask (if it is important I will 
trace down the thread) I think when using it on floating point maps (values 
like 0.2, 0.3, 0.4, etc.) and they got rounded (or truncated?) to 0 or 
something similar.

But, in this case the "value=1" is assigned so it should make no difference. I 
was too quick. Sorry.

Nikos