r.area - GRASS GIS manual

Note: This document is for an older version of GRASS GIS that will be discontinued soon. 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.

NOTE

If areas belonging to a certain category are not continuous every area belonging to the same category has the same area value.

AUTHOR

Jarek Jasiewicz

SOURCE CODE

Available at: r.area source code (history)

Latest change: Monday Jan 30 19:52:26 2023 in commit: cac8d9d848299297977d1315b7e90cc3f7698730