I need to calculate the volume of the differences between two DTM from different years with QGIS. I am trying to figure out how to do it, but I do not see anything clear about that.
Could anyone give me a tip to be able to do it?
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The usage of SAGA
raster volume is slightly different from what you would expect with ArcGIS
Cut/Fill, as it is a tool to calculate a volume above a reference surface.
How about simply using QGIS
(2) You will obtain output raster.
(3) If it was ArcGIS
Cut Fill tool, it will immediately give you
Cut volume and
Fill volume summarized in a table. With QGIS, you would probably use
Raster layer statistics tool (in QGIS geoalgorithm | Raster tools) or other plugins, which fits for your target statistics.