r.reclass.area
Reclasses a raster map greater or less than user specified area size (in hectares).
r.reclass.area [-cd] input=name output=name value=float mode=string [method=string] [--overwrite] [--verbose] [--quiet] [--qq] [--ui]
Example:
r.reclass.area input=name output=name value=float mode=string
grass.script.run_command("r.reclass.area", input, output, value, mode, method="reclass", flags=None, overwrite=False, verbose=False, quiet=False, superquiet=False)
Example:
gs.run_command("r.reclass.area", input="name", output="name", value=float, mode="string")
Parameters
input=name [required]
Name of input raster map
output=name [required]
Name for output raster map
value=float [required]
Value option that sets the area size limit (in hectares)
mode=string [required]
Lesser or greater than specified value
Allowed values: lesser, greater
method=string
Method used for reclassification
Allowed values: reclass, rmarea
Default: reclass
-c
Input map is clumped
-d
Clumps including diagonal neighbors
--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
input : str, required
Name of input raster map
Used as: input, raster, name
output : str, required
Name for output raster map
Used as: output, raster, name
value : float, required
Value option that sets the area size limit (in hectares)
mode : str, required
Lesser or greater than specified value
Allowed values: lesser, greater
method : str, optional
Method used for reclassification
Allowed values: reclass, rmarea
Default: reclass
flags : str, optional
Allowed values: c, d
c
Input map is clumped
d
Clumps including diagonal neighbors
overwrite: bool, optional
Allow output files to overwrite existing files
Default: False
verbose: bool, optional
Verbose module output
Default: False
quiet: bool, optional
Quiet module output
Default: False
superquiet: bool, optional
Very quiet module output
Default: False
DESCRIPTION
r.reclass.area reclasses a raster map greater or less than a user specified area size (in hectares).
If the -c flag is used, r.reclass.area will skip the creation of a clumped raster and assume that the input raster is already clumped.
EXAMPLES
In this example, the ZIP code map in the North Carolina sample dataset is filtered for large areas (removing smaller areas from the map).
g.region raster=zipcodes -p
r.report zipcodes unit=h
Extract only areas greater than 2000 ha, NULL otherwise:
r.reclass.area input=zipcodes output=zipcodes_larger2000ha mode=greater value=2000
r.report zipcodes_larger2000ha unit=h
Figure: r.reclass.area method=reclass
In this example, the ZIP code map in the North Carolina sample dataset is filtered for smaller areas which are substituted with the value of the respective adjacent area with largest shared boundary. Reclass by substitutional removing of areas minor of 1000 ha:
r.reclass.area input=zipcodes output=zipcodes_minor1000ha mode=lesser value=1000 method=rmarea
Figure: r.reclass.area method=rmarea
SEE ALSO
AUTHORS
NRCS,
Markus Neteler
SOURCE CODE
Available at: r.reclass.area source code
(history)
Latest change: Tuesday Feb 18 17:20:26 2025 in commit 688e625