About the sugfgestion from Luisa, of using r.mode it seems exacly what I want... But instead of using polygons I use a raster (coverage map). For me, its ok
I have tested and, I'm obtaining a bit weird error on this: r.mode base...@permanent cover=1107...@permanent output=test_outputv0 ERROR: reading r.stats output ERROR: No rules specified My 11073_B is a CELL satellite image (0-1000) my v0 is a FCELL raster with values that range from 1 til 50000 (but I don't have that many values only 30 of them but are dispersed between 1 and 50000. Any ideas to fix this? THanks Monica On Mon, Oct 18, 2010 at 12:33 PM, Daniel Victoria <[email protected] > wrote: > This should be done by v.rast.stats but, from the manual I don't think > it includes mode... > > On Mon, Oct 18, 2010 at 8:32 AM, Monica Buescu > <[email protected]> wrote: > > I don't think so.. What I want is to calculate the mode (most frequent > > value) of a raster file for each polygon that this raster covers. What I > > will have is the most frequent raster value that falls inside each > polygon. > > Is kind of a univariate statistic of a raster for each polygon. > > Any ideas? > > (thanks Micha for your suggestion) > > > > On Mon, Oct 18, 2010 at 10:19 AM, Micha Silver <[email protected]> > wrote: > >> > >> On 18/10/2010 10:11, Monica Buescu wrote: > >> > >> Greetings > >> I have an image that is divided in several (>300) polygons and, using a > >> data_map raster, I want to calculate the mode value from this image for > each > >> polygon. Is it possible? can anyone give me a tip on this? > >> > >> Have a look at v.what.rast. That might be what you're looking for. > >> > >> Thanks > >> Monica > >> This mail was received via Mail-SeCure System. > >> > >> _______________________________________________ > >> grass-user mailing list > >> [email protected] > >> http://lists.osgeo.org/mailman/listinfo/grass-user > >> > >> This mail was received via Mail-SeCure System. > >> > >> > >> > >> > >> -- > >> Micha Silver > >> http://www.surfaces.co.il/ > >> Arava Development Co. +972-52-3665918 > > > > > > _______________________________________________ > > grass-user mailing list > > [email protected] > > http://lists.osgeo.org/mailman/listinfo/grass-user > > > > >
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