r.blend
Blends color components of two raster maps by a given ratio.
r.blend [-c] first=name second=name output=basename [percent=float] [--overwrite] [--verbose] [--quiet] [--qq] [--ui]
Example:
r.blend first=name second=name output=basename
grass.script.run_command("r.blend", first, second, output, percent=50, flags=None, overwrite=None, verbose=None, quiet=None, superquiet=None)
Example:
gs.run_command("r.blend", first="name", second="name", output="basename")
grass.tools.Tools.r_blend(first, second, output, percent=50, flags=None, overwrite=None, verbose=None, quiet=None, superquiet=None)
Example:
tools = Tools()
tools.r_blend(first="name", second="name", output="basename")
This grass.tools API is experimental in version 8.5 and expected to be stable in version 8.6.
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
Allowed values: 0-100
Default: 50
-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
--qq
Very quiet module output
--ui
Force launching GUI dialog
first : str, required
Name of first raster map for blending
Used as: input, raster, name
second : str, required
Name of second raster map for blending
Used as: input, raster, name
output : str, required
Basename for red, green and blue output raster maps
Used as: output, raster, basename
percent : float, optional
Percentage weight of first map for color blending
Allowed values: 0-100
Default: 50
flags : str, optional
Allowed values: c
c
Combine resulting R,G,B layers into single output map
overwrite : bool, optional
Allow output files to overwrite existing files
Default: None
verbose : bool, optional
Verbose module output
Default: None
quiet : bool, optional
Quiet module output
Default: None
superquiet : bool, optional
Very quiet module output
Default: None
first : str, required
Name of first raster map for blending
Used as: input, raster, name
second : str, required
Name of second raster map for blending
Used as: input, raster, name
output : str, required
Basename for red, green and blue output raster maps
Used as: output, raster, basename
percent : float, optional
Percentage weight of first map for color blending
Allowed values: 0-100
Default: 50
flags : str, optional
Allowed values: c
c
Combine resulting R,G,B layers into single output map
overwrite : bool, optional
Allow output files to overwrite existing files
Default: None
verbose : bool, optional
Verbose module output
Default: None
quiet : bool, optional
Quiet module output
Default: None
superquiet : bool, optional
Very quiet module output
Default: None
Returns:
result : grass.tools.support.ToolResult | None
If the tool produces text as standard output, a ToolResult object will be returned. Otherwise, None
will be returned.
DESCRIPTION
r.blend blends color components of 2 raster maps by a specified 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=elevation
r.relief input=elevation output=relief zscale=10
r.blend -c first=elevation second=relief output=blend percent=75
Figure: Elevation blended with shaded relief
SEE ALSO
d.shade, g.region, r.shade, r.colors, r.his, r.mapcalc, r.rgb, r.support
AUTHORS
Unknown: probably CERL
Updated to GRASS 5.7 by Michael Barton, Arizona State University
SOURCE CODE
Available at: r.blend source code
(history)
Latest change: Saturday Apr 19 17:44:03 2025 in commit 24d7441