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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

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