.TH r.surf.random 1grass "" "GRASS 7.8.5" "GRASS GIS User's Manual"
.SH NAME
\fI\fBr.surf.random\fR\fR  \- Produces a raster surface map of uniform random deviates with defined range.
.SH KEYWORDS
raster, surface, random
.SH SYNOPSIS
\fBr.surf.random\fR
.br
\fBr.surf.random \-\-help\fR
.br
\fBr.surf.random\fR [\-\fBi\fR] \fBoutput\fR=\fIname\fR  [\fBmin\fR=\fIinteger\fR]   [\fBmax\fR=\fIinteger\fR]   [\-\-\fBoverwrite\fR]  [\-\-\fBhelp\fR]  [\-\-\fBverbose\fR]  [\-\-\fBquiet\fR]  [\-\-\fBui\fR]
.SS Flags:
.IP "\fB\-i\fR" 4m
.br
Create an integer raster map
.IP "\fB\-\-overwrite\fR" 4m
.br
Allow output files to overwrite existing files
.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 "\fBoutput\fR=\fIname\fR \fB[required]\fR" 4m
.br
Name for output raster map
.IP "\fBmin\fR=\fIinteger\fR" 4m
.br
Minimum random value
.br
Default: \fI0\fR
.IP "\fBmax\fR=\fIinteger\fR" 4m
.br
Maximum random value
.br
Default: \fI100\fR
.SH DESCRIPTION
\fBr.surf.random\fR produces a raster map layer of uniform random deviates
whose range can be expressed by the user. It is essentially the same as
\fIr.surf.gauss\fR, but uses a linear random number generator instead.
It uses the random number generator drand48() or rand(),
depending on the user\(cqs platform.
.PP
.br
\fIHistogram of map generated with r.surf.random\fR
.SH EXAMPLE
.br
.nf
\fC
g.region \-p n=228500 s=215000 w=630000 e=645000 res=10
r.surf.random out=random min=0 max=100
# check result
r.univar random
\fR
.fi
.SH SEE ALSO
\fI
r.random.surface,
r.surf.contour,
r.surf.fractal,
r.surf.gauss,
r.surf.idw,
v.surf.rst
\fR
.SH AUTHOR
Jo Wood
.br
Midlands Regional Research Laboratory (ASSIST)
.br
University of Leicester
.br
\fIOctober 1991\fR
.br
.SH SOURCE CODE
.PP
Available at: r.surf.random source code (history)
.PP
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.PP
© 2003\-2020
GRASS Development Team,
GRASS GIS 7.8.5 Reference Manual