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r.reclass.area(1grass) Grass User's Manual r.reclass.area(1grass)

NAME

r.reclass.area - Reclasses a raster map greater or less than user specified area size (in hectares).

KEYWORDS

raster, statistics, aggregation

SYNOPSIS

r.reclass.area
 
r.reclass.area help
 
r.reclass.area input=string output=string [lesser= float] [greater=float] [--overwrite] [-- verbose] [--quiet]

Flags:

--overwrite
 
Allow output files to overwrite existing files
--verbose
 
Verbose module output
--quiet
 
Quiet module output

Parameters:

input=string
 
Name of input raster map
output=string
 
Name for output raster map
lesser=float
 
Lesser value option that sets the <= area size limit [hectares]
greater=float
 
Greater value option that sets the >= area size limit [hectares]

DESCRIPTION

r.reclass.area reclasses a raster map greater or less than a user specified area size (in hectares).

EXAMPLE

In this example, the ZIP code map in the North Carolina sample dataset location is filtered for large areas:
 
g.region rast=zipcodes -p
 
r.report zipcodes unit=h
 
# extract only areas > 2000 ha:
 
r.reclass.area input=zipcodes output=zipcodes_larger2000ha greater=2000
 

SEE ALSO

r.reclass
 
r.clump
 
r.stats
 

AUTHORS

NRCS,
 
Markus Neteler
Last changed: $Date: 2011-11-08 10:42:51 +0100 (Tue, 08 Nov 2011) $
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