SV: [GRASS-user] Raster addition

[TimNorwey]

Martin Album Ytre-Eide wrote:
> 
> I would like the NULL values that overlap with none NULL values to be
> treated as 0, and still have NULL values where both maps have NULL values.
> The combined map would be a large map with NULL values and added values.
> 

hy,

i guess r.patch can do that for you ... 
http://grass.osgeo.org/grass70/manuals/html70_user/r.patch.html r.patch  ...
hope that i´m not wrong

cheers,
tim

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