NAME

       r.blend  - Blends color components of two raster maps by a given ratio.

KEYWORDS

       raster, composite

SYNOPSIS

       r.blend
       r.blend --help
       r.blend  [-c]  first=name  second=name  output=basename   [percent=float]    [--overwrite]
       [--help]  [--verbose]  [--quiet]  [--ui]

   Flags:
       -c
           Combine resulting R,G,B layers into single output map

       --overwrite
           Allow output files to overwrite existing files

       --help
           Print usage summary

       --verbose
           Verbose module output

       --quiet
           Quiet module output

       --ui
           Force launching GUI dialog

   Parameters:
       first=name [required]
           Name of first raster map for blending

       second=name [required]
           Name of second raster map for blending

       output=basename [required]
           Basename for red, green and blue output raster maps

       percent=float
           Percentage weight of first map for color blending
           Options: 0-100
           Default: 50

DESCRIPTION

       r.blend blends color components of 2 raster maps by a specificed percentage of  the  first
       map.

EXAMPLE

       Blending  the  aspect  map  with the elevation map for a shaded map (North Carolina sample
       dataset):
       g.region raster=aspect -p
       r.blend first=aspect second=elevation output=elev_shade_blend
       d.mon wx0
       d.rgb blue=elev_shade_blend.b green=elev_shade_blend.g red=elev_shade_blend.r

SEE ALSO

        r.shade, r.his, r.mapcalc, r.colors, r.support, d.shade, g.region

AUTHOR

       Unknown: probably CERL
       Updated to GRASS 5.7 by Michael Barton, Arizona State University

       Last changed: $Date: 2014-12-20 05:56:06 +0100 (Sat, 20 Dec 2014) $

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