NAME
r.area - Calculates area of clumped areas and remove areas smaller or greater than given threshold.KEYWORDS
raster, statistics, areaSYNOPSIS
r.area
r.area --helpr.area [-b] input=name output=name [lesser=integer] [greater=integer] [--overwrite] [--help] [--verbose] [--quiet] [--ui]
Flags:
- -b
- Binary output
- --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 cell category map, e.g., maps created with r.clump
- output=name [required]
- Name of output raster with categories representing area size (in cells)
- lesser=integer
- Remove areas with number of cells lower than given value (0 for none):
- Default: 0
- greater=integer
- Remove areas with number of cells greater than given value (-1 for none):
- Default: -1
Table of contents
DESCRIPTION
Module r.area reclassifies raster areas (created typically with r.clump) to values representing their size (in cells). Additionally, it can be used to remove areas smaller or greater than a threshold.
NOTE
If areas belonging to a certain category are not continuous every area belonging to the same category has the same area value.
SEE ALSO
r.clump, r.mapcalc, r.reclass.areaAUTHOR
Jarek JasiewiczSOURCE CODE
Available at: r.area source code (history)
Latest change: Monday Jan 30 19:52:26 2023 in commit: cac8d9d848299297977d1315b7e90cc3f7698730
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