.TH r.mapcalculator 1grass "" "GRASS 6.4.4" "Grass User's Manual"
.SH NAME
\fI\fBr.mapcalculator\fR\fR  - Calculate new raster map from a r.mapcalc expression.
.SH KEYWORDS
.SH SYNOPSIS
\fBr.mapcalculator\fR
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\fBr.mapcalculator help\fR
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\fBr.mapcalculator\fR [\-\fBeo\fR]  [\fBamap\fR=\fIstring\fR]   [\fBbmap\fR=\fIstring\fR]   [\fBcmap\fR=\fIstring\fR]   [\fBdmap\fR=\fIstring\fR]   [\fBemap\fR=\fIstring\fR]   [\fBfmap\fR=\fIstring\fR]  \fBformula\fR=\fIstring\fR \fBoutfile\fR=\fIstring\fR  [\fBhelp\fR=\fIstring\fR]   [\-\-\fBoverwrite\fR]  [\-\-\fBverbose\fR]  [\-\-\fBquiet\fR] 
.SS Flags:
.IP "\fB\-e\fR" 4m
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Expert mode (enter a set of r.mapcalc expressions)
.IP "\fB\-o\fR" 4m
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Do not overwrite existing map
.IP "\fB\-\-overwrite\fR" 4m
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Allow output files to overwrite existing files
.IP "\fB\-\-verbose\fR" 4m
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Verbose module output
.IP "\fB\-\-quiet\fR" 4m
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Quiet module output
.PP
.SS Parameters:
.IP "\fBamap\fR=\fIstring\fR" 4m
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A
.IP "\fBbmap\fR=\fIstring\fR" 4m
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B
.IP "\fBcmap\fR=\fIstring\fR" 4m
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C
.IP "\fBdmap\fR=\fIstring\fR" 4m
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D
.IP "\fBemap\fR=\fIstring\fR" 4m
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E
.IP "\fBfmap\fR=\fIstring\fR" 4m
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F
.IP "\fBformula\fR=\fIstring\fR" 4m
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Formula (e.g. A-B or A*C+B)
.IP "\fBoutfile\fR=\fIstring\fR" 4m
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Name for output raster map
.IP "\fBhelp\fR=\fIstring\fR" 4m
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Show help
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Options: \fI-,help,man\fR
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Default: \fI-\fR
.PP
.SH DESCRIPTION
\fIr.mapcalculator\fR provides a GUI frontend to \fIr.mapcalc\fR.
Up to 5 maps can be combined using simple expressions.
In the expert mode, it runs \fIr.mapcalc\fR for more complex expressions.
Enter an \fIr.mapcalc\fR expression in the formula field using the
format: A+C or exp(A+C)+(B-2)*7 where A, B, C are raster maps entered
in the A field, B field, and C field. 
.PP
Do not enter output file in the formula field: correct: A+B; incorrect: newfile = A+B. Use no spaces or blanks. 
.PP
Expert mode runs \fIr.mapcalc\fR for more complex expressions.
.SH SEE ALSO
\fIr.mapcalc\fR
.SH AUTHOR
R. Brunzema (r.brunzema@web.de)
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Updated to GRASS 5.7 by Michael Barton, Arizona State University
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\fILast changed: $Date: 2011-11-08 10:42:51 +0100 (Tue, 08 Nov 2011) $\fR
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© 2003-2014 GRASS Development Team