# GRASS GIS Manual: r.sum

## NAME

r.sum

## DESCRIPTION

r.sum sums up the raster cell values. For example, it can be used to summarize the population of a country. Using a raster MASK, raster areas can be easily selected for the summary.

## SEE ALSO

r.surf.area

## AUTHOR

Bill Brown, UIUC GIS Laboratory

Last changed: $Date: 2008-05-16 12:09:06 -0700 (Fri, 16 May 2008) $

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