r.reclass.area(1grass) | GRASS GIS User's Manual | r.reclass.area(1grass) |
r.reclass.area - Reclasses a raster map greater or less than user specified area size (in hectares).
raster, statistics, aggregation
r.reclass.area
r.reclass.area --help
r.reclass.area [-cd] input=name
output=name value=float
mode=string [method=string] [--overwrite]
[--help] [--verbose] [--quiet] [--ui]
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.
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
Figure: r.reclass.area method=reclass 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
Figure: r.reclass.area method=rmarea
r.reclass, r.clump, r.stats
NRCS,
Markus Neteler
Available at: r.reclass.area source code (history)
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