.TH r.blend 1grass "" "GRASS 6.4.2" "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): .PP \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 .br .SH SEE ALSO .br .br \fI .br d.shadedmap, .br g.region, .br r.mapcalc, .br r.colors, .br r.support .br \fR .br .br .SH AUTHOR .br .br Unknown: probably CERL .br .br Updated to GRASS 5.7 by Michael Barton, Arizona State University .br .br .PP .br \fILast changed: $Date: 2011-09-04 15:23:30 +0200 (Sun, 04 Sep 2011) $\fR .br .PP Full index .br .PP © 2003-2011 GRASS Development Team .br