DESCRIPTION

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

If the -c flag is used, r.reclass.area will skip the creation of a clumped raster and assume that the input raster is already clumped.

EXAMPLES

In this example, the ZIP code map in the North Carolina sample dataset location is filtered for large areas (removing smaller areas from the map): 
g.region raster=zipcodes -p
r.report zipcodes unit=h

# extract only areas greater than 2000 ha, NULL otherwise:
r.reclass.area input=zipcodes output=zipcodes_larger2000ha \
               mode=greater value=2000

r.report zipcodes_larger2000ha unit=h
In this example, the ZIP code map in the North Carolina sample dataset location is filtered for smaller areas which are substituted with the value of the respective adjacent area with largest shared boundary: 
# reclass by substitutional removing of areas minor of 1000 ha
r.reclass.area input=zipcodes output=zipcodes_minor1000ha \
               mode=lesser value=1000 method=rmarea

SEE ALSO

r.reclass, r.clump, r.stats

AUTHORS

NRCS,
Markus Neteler

Last changed: $Date$