On Wed, Jan 20, 2010 at 7:03 PM, Luis Lisboa <[email protected]> wrote: > Greetings all > I've been reading a Remote Sensing classic "Remote Sensing and Image > intepretation" by Lillesand and Kiefer. :) > By Those guys Minimum Mapping Units are the smallest size areal entity to be > mapped as a discrete area. > They also state that: The size of a minimum area that can be mapped as any > particular land use/land cover class depends on the scale and resolution of > the satellite images." > Ok, now my "situation" :). I need to produce a few land cover maps, after > classification, with an aggregation of a defined minimum mapping unit(MMU) > for a scale of 1:50000. As far as I can see, I would say that MMU would be > minumum size of a polygon that can be mapped. For istance what Would I have > to do to aggregate a classification map with a minimum area of 20 km^2?
Quick answer without thinking too much: - r.reclass.area: Reclasses a raster map greater or less than user specified area size (in hectares). or - v.clean, tool rmarea: remove small areas, the longest boundary with adjacent area is removed Markus _______________________________________________ grass-user mailing list [email protected] http://lists.osgeo.org/mailman/listinfo/grass-user
