NAME

       r3.null  - Explicitly create the 3D NULL-value bitmap file.

KEYWORDS

       raster3d, voxel

SYNOPSIS

       r3.null
       r3.null help
       r3.null   map=string    [setnull=val[-val][,val[-val],...]]    [null=float]    [--verbose]
       [--quiet]

   Parameters:
       map=string
           3d raster map for which to modify null values

       setnull=val[-val][,val[-val],...]
           List of cell values to be set to NULL

       null=float
           The value to replace the null value by

DESCRIPTION

       Modifies the NULL values of a 3D raster map.

SEE ALSO

        r.null

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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