.TH r3.null 1grass "" "GRASS 7.8.5" "GRASS GIS User's Manual"
.SH NAME
\fI\fBr3.null\fR\fR  \- Explicitly create the 3D NULL\-value bitmap file.
.SH KEYWORDS
raster3d, null data, voxel
.SH SYNOPSIS
\fBr3.null\fR
.br
\fBr3.null \-\-help\fR
.br
\fBr3.null\fR \fBmap\fR=\fIstring\fR  [\fBsetnull\fR=\fIval[\-val]\fR[,\fIval[\-val]\fR,...]]   [\fBnull\fR=\fIfloat\fR]   [\-\-\fBhelp\fR]  [\-\-\fBverbose\fR]  [\-\-\fBquiet\fR]  [\-\-\fBui\fR]
.SS Flags:
.IP "\fB\-\-help\fR" 4m
.br
Print usage summary
.IP "\fB\-\-verbose\fR" 4m
.br
Verbose module output
.IP "\fB\-\-quiet\fR" 4m
.br
Quiet module output
.IP "\fB\-\-ui\fR" 4m
.br
Force launching GUI dialog
.SS Parameters:
.IP "\fBmap\fR=\fIstring\fR \fB[required]\fR" 4m
.br
3D raster map for which to modify null values
.IP "\fBsetnull\fR=\fIval[\-val][,\fIval[\-val]\fR,...]\fR" 4m
.br
List of cell values to be set to NULL
.IP "\fBnull\fR=\fIfloat\fR" 4m
.br
The value to replace the null value by
.SH DESCRIPTION
Modifies the NULL values of a 3D raster map.
.SH SEE ALSO
\fI
r.null
\fR
.SH AUTHORS
Roman Waupotitsch, Michael Shapiro,
Helena Mitasova, Bill Brown, Lubos Mitas,
Jaro Hofierka
.SH SOURCE CODE
.PP
Available at: r3.null source code (history)
.PP
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.PP
© 2003\-2020
GRASS Development Team,
GRASS GIS 7.8.5 Reference Manual