.TH r3.mapcalculator 1grass "" "GRASS 6.4.2" "Grass User's Manual"
.SH NAME
\fI\fBr3.mapcalculator\fR\fR  - Calculates new grid3D volume from r3.mapcalc expression.
.SH KEYWORDS
.SH SYNOPSIS
\fBr3.mapcalculator\fR
.br
\fBr3.mapcalculator help\fR
.br
\fBr3.mapcalculator\fR [-\fBeo\fR]  [\fBagrid\fR=\fIstring\fR]   [\fBbgrid\fR=\fIstring\fR]   [\fBcgrid\fR=\fIstring\fR]   [\fBdgrid\fR=\fIstring\fR]   [\fBegrid\fR=\fIstring\fR]   [\fBfgrid\fR=\fIstring\fR]  \fBformula\fR=\fIstring\fR \fBoutfile\fR=\fIstring\fR  [\fBhelp\fR=\fIstring\fR]   [--\fBverbose\fR]  [--\fBquiet\fR] 
.SS Flags:
.IP "\fB-e\fR" 4m
.br
Expert mode (enter a set of r3.mapcalc expressions)
.IP "\fB-o\fR" 4m
.br
Do not overwrite existing map
.IP "\fB--verbose\fR" 4m
.br
Verbose module output
.IP "\fB--quiet\fR" 4m
.br
Quiet module output
.PP
.SS Parameters:
.IP "\fBagrid\fR=\fIstring\fR" 4m
.br
A (grid3D file)
.IP "\fBbgrid\fR=\fIstring\fR" 4m
.br
B (grid3D file)
.IP "\fBcgrid\fR=\fIstring\fR" 4m
.br
C (grid3D file)
.IP "\fBdgrid\fR=\fIstring\fR" 4m
.br
D (grid3D file)
.IP "\fBegrid\fR=\fIstring\fR" 4m
.br
E (grid3D file)
.IP "\fBfgrid\fR=\fIstring\fR" 4m
.br
F (grid3D file)
.IP "\fBformula\fR=\fIstring\fR" 4m
.br
Formula (e.g. A-B or A*C+B)
.IP "\fBoutfile\fR=\fIstring\fR" 4m
.br
Name for output grid3D volume
.IP "\fBhelp\fR=\fIstring\fR" 4m
.br
Show help
.br
Options: \fI-,help,man\fR
.br
Default: \fI-\fR
.PP
.SH DESCRIPTION
\fIr3.mapcalculator\fR provides a GUI frontend to \fIr3.mapcalc\fR.
Up to 5 maps can be combined using simple expressions.
In the expert mode, it runs \fIr3.mapcalc\fR for more complex expressions.
Enter an \fIr3.mapcalc\fR expression in the formula field using the
format: A+C or exp(A+C)+(B-2)*7 where A, B, C are 3D raster volumes 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 \fIr3.mapcalc\fR for more complex expressions.
.SH SEE ALSO
\fIr3.mapcalc\fR
.SH AUTHOR
Michael Barton, Arizona State University. Based on r.mapcalculator by R. Brunzema (r.brunzema@web.de)
.PP
\fILast changed: $Date: 2011-11-08 10:42:51 +0100 (Tue, 08 Nov 2011) $\fR
.PP
Full index
.PP
© 2003-2011 GRASS Development Team