Let's say in grass I have a raster layer "regionId" and a raster layer
"forestArea".

In the regionId I have stored the ids of the regions, in the forestArea I
stored the square km of forest within the pixel.

How can I print a table summing up the forest area by region, that is the
sum of the values of a layer aggregated ("group by") by a second layer ?


Cheers,

  Antonello




-- 
Antonello Lobianco
AgroParisTech, Laboratoire d'Economie Forestière
14 Rue Girardet - 54000 Nancy, France
Tel: +33.383396865
Email: antonello.lobia...@nancy.inra.fr
http://antonello.lobianco.org
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