## DESCRIPTION

File map is used as reference file. Cells in the mask are marked as "mask out" if the corresponding cell in map contains a value in the range specified with maskvalues.

Before a new 3D-mask can be created the exisitng 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