Note: A new GRASS GIS stable version has been released: GRASS GIS 7.6, available here.
Updated manual page: here
NAME
r.rgb - Splits a raster map into red, green and blue maps.
KEYWORDS
raster,
RGB,
separate,
split
SYNOPSIS
r.rgb
r.rgb --help
r.rgb input=name [red=name] [green=name] [blue=name] [--overwrite] [--help] [--verbose] [--quiet] [--ui]
Flags:
- --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:
- input=name [required]
- Name of input raster map
- red=name
- Red channel raster map name
- green=name
- Green channel raster map name
- blue=name
- Blue channel raster map name
r.rgb generates separate red, green and blue maps from a
raster map and its associated color table (grey255).
g.region raster=elevation -p
r.rgb input=elevation red=elevation.r green=elevation.g blue=elevation.b
In this case r.rgb produces in the current mapset three new
raster maps - 'elevation.r', 'elevation.g', 'elevation.b'.
![](r_rgb_elevation.png)
r.composite,
r.blend,
r.colors,
r.mapcalc
Glynn Clements
Last changed: $Date: 2016-03-18 07:09:00 -0700 (Fri, 18 Mar 2016) $
SOURCE CODE
Available at: r.rgb source code (history)
Note: A new GRASS GIS stable version has been released: GRASS GIS 7.6, available here.
Updated manual page: here
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GRASS Development Team,
GRASS GIS 7.2.4svn Reference Manual