r.area - GRASS GIS manual

Note: This document is for an older version of GRASS GIS that has been discontinued. You should upgrade, and read the current manual page.

NAME

r.area - Calculates area of clumped areas and remove areas smaller or greater than given threshold.

KEYWORDS

raster, statistics, area

SYNOPSIS

r.area

r.area --help

r.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

DESCRIPTION
NOTE
SEE ALSO
AUTHOR

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.