.TH r3.mask 1grass "" "GRASS 6.4.4" "Grass User's Manual"
.SH NAME
\fI\fBr3.mask\fR\fR  - Establishes the current working 3D raster mask.
.SH KEYWORDS
raster3d, voxel
.SH SYNOPSIS
\fBr3.mask\fR
.br
\fBr3.mask help\fR
.br
\fBr3.mask map\fR=\fIstring\fR  [\fBmaskvalues\fR=\fIval[\-val]\fR[,\fIval[\-val]\fR,...]]   [\-\-\fBverbose\fR]  [\-\-\fBquiet\fR] 
.SS Parameters:
.IP "\fBmap\fR=\fIstring\fR" 4m
.br
3D raster map with reference values
.IP "\fBmaskvalues\fR=\fIval[\-val][,\fIval[\-val]\fR,...]\fR" 4m
.br
List of cell values to be masked out
.PP
.SH DESCRIPTION
File \fImap\fR is used as reference file.
Cells in the mask are marked as "mask out" if the corresponding cell in
\fImap\fR contains a value in the range specified with \fImaskvalues\fR.
.PP
Before a new 3D-mask can be created the exisitng mask has to be removed
with \fIg.remove\fR.
.SH SEE ALSO
\fI
g.remove
\fR
.SH AUTHORS
Roman Waupotitsch, Michael Shapiro, 
Helena Mitasova, Bill Brown, Lubos Mitas,
Jaro Hofierka
.PP
\fILast changed: $Date: 2011-09-13 22:13:36 +0200 (Tue, 13 Sep 2011) $\fR
.PP
Full index
.PP
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