One idea: Use calculator on GRASS and do:
Surface 1 - Surface 2 = Hight We have the heigth value on each cell, so now use r.sum: Volume = r.sum (of Hight) * side of pixel ^2 (if cells are squares) Of course, you must use a mask to boundary your area of interest Carlos Cerdán El 05/03/13 17:49, Pedro Venâncio escribió:
Hi all, Is there any way to calculate the volume between two surfaces (two DEM rasters)? There are ways to calculate the volume between a surface and a particular height value (GRASS r.volume or SAGA Grid Volume) but I can not find how to calculate the volumes (landfill / excavation) between two DEM. Any tips? Thank you very much! Best regards, Pedro Venâncio _______________________________________________ Qgis-user mailing list [email protected] http://lists.osgeo.org/mailman/listinfo/qgis-user
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