r.volume
Calculates the volume of data "clumps".
Raster (r.*)
ParameterRaster|input|Name of input raster map representing data that will be summed within clumps|False
ParameterRaster|clump|Clumps layer (preferably the output of r.clump)|False
*ParameterBoolean|-f|Generate unformatted report|False
OutputVector|centroids|Centroids