.TH r.blend 1grass "" "GRASS 6.4.4" "Grass User's Manual"
.SH NAME
\fI\fBr.blend\fR\fR  - Blends color components of two raster maps by a given ratio.
.SH KEYWORDS
raster
.SH SYNOPSIS
\fBr.blend\fR
.br
\fBr.blend help\fR
.br
\fBr.blend first\fR=\fIname\fR \fBsecond\fR=\fIname\fR \fBoutput\fR=\fIname\fR  [\fBpercent\fR=\fIinteger\fR]   [\-\-\fBverbose\fR]  [\-\-\fBquiet\fR] 
.SS Parameters:
.IP "\fBfirst\fR=\fIname\fR" 4m
.br
Name of first raster map for blending
.IP "\fBsecond\fR=\fIname\fR" 4m
.br
Name of second raster map for blending
.IP "\fBoutput\fR=\fIname\fR" 4m
.br
Base name for red, green and blue output maps containing the blend
.IP "\fBpercent\fR=\fIinteger\fR" 4m
.br
Percentage weight of first map for color blending
.br
Options: \fI0-99\fR
.br
Default: \fI2\fR
.PP
.SH DESCRIPTION
\fIr.blend\fR blends color components of 2 raster maps by a
specificed percentage of the first map.
.SH EXAMPLE
Blending the aspect map with the elevation map for a shaded map
(North Carolina sample dataset):
\fC
.DS
.br
g.region rast=aspect \-p
.br
r.blend first=aspect second=elevation output_prefix=elev_shade_blend
.br
d.mon x0
.br
d.rgb blue=elev_shade_blend.b green=elev_shade_blend.g red=elev_shade_blend.r
.br
.DE
\fR
.SH SEE ALSO
\fI
d.shadedmap,
g.region,
r.mapcalc,
r.colors,
r.support
\fR
.SH AUTHOR
Unknown: probably CERL
.br
Updated to GRASS 5.7 by Michael Barton, Arizona State University
.PP
\fILast changed: $Date: 2013-09-01 09:16:13 +0200 (Sun, 01 Sep 2013) $\fR
.PP
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.PP
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