NAME

       r3.mask  - Establishes the current working 3D raster mask.

KEYWORDS

       raster3d, voxel

SYNOPSIS

       r3.mask
       r3.mask help
       r3.mask map=string  [maskvalues=val[-val][,val[-val],...]]   [--verbose]  [--quiet]

   Parameters:
       map=string
           3D raster map with reference values

       maskvalues=val[-val][,val[-val],...]
           List of cell values to be masked out

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

       Last changed: $Date: 2011-09-13 13:13:36 -0700 (Tue, 13 Sep 2011) $

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       © 2003-2013 GRASS Development Team