Hei Antonello, Have a look at r.univar (https://grass.osgeo.org/grass70/manuals/r.univar.html) And the zone option.
Cheers Stefan From: grass-user [mailto:[email protected]] On Behalf Of Antonello Lobianco Sent: 19. september 2016 18:42 To: grass-user <[email protected]> Subject: [GRASS-user] How to print a table with the values of a given raster layer aggregated by a second raster layer ? 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: [email protected]<mailto:[email protected]> http://antonello.lobianco.org<http://antonello.lobianco.org/>
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