## DESCRIPTION

r3.mask facilitates the creation of a raster3d "MASK" map to control raster3d operations. The raster3d map is used as the reference map. Cells in the mask are marked as "mask out" if the corresponding cell in map contains a value in the range specified with maskvalues.

## NOTES

Before a new 3D-mask can be created the existing mask has to be removed with g.remove.

## SEE ALSO

g.remove

## AUTHORS

Roman Waupotitsch, Michael Shapiro, Helena Mitasova, Bill Brown, Lubos Mitas, Jaro Hofierka