NAME
r.area - Calculates size of clumped areas.
KEYWORDS
raster
SYNOPSIS
r.area
r.area help
r.area [-b] input=name output=name [treshold=integer] [--overwrite] [--verbose] [--quiet]
Flags:
- -b
- Binary output
- --overwrite
- Allow output files to overwrite existing files
- --verbose
- Verbose module output
- --quiet
- Quiet module output
Parameters:
- input=name
- Map created with r.clump
- output=name
- Map with area size (in cells)
- treshold=integer
- Remove areas lower than (0 for none):
- Default: 0
OPTIONS
input
Name of input created with r.clump or another cell category map.
treshold
Remove areas smaller than threshold, set null for removing areas
binary
Output map has only 0 and 1 values. If treshold is applied small areas are emoved and replaced by 0
output
Original categories replaced with number of cells for each category. If areas belonging
to category are not continuous every area belonging to the same category has the same area value.
DESCRIPTION
module can be used to remove, areas smaller than threshold, reclass according areas
(similar to r.reclass area, but work in cells, not hectares and allow create more classes)
SEE ALSO
r.clump,
r.mapcalc,
r.reclass.area
AUTHOR
Jarek Jasiewicz
Last changed: $Date$
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