Hi Relpers, In fact I really need that each pixel be a polygon. I know that the number of polygons will be very large. But it is part of a research on my lab, to see how different variables and scales can help to explain some patterns that occurs on our region of interest. The example of tempetarute at 30x30 m resolution is just the highest fine scale we are analyzing.
When I run the raster to vector on arcgis it takes about 5 minutes, for my 2400x2400 image. But I would like to turn the solution as general as possible because I need run it at varying scales and for a large set of variables. Thanks for your time. cheers milton 2009/6/11 Nikos Alexandris <[email protected]> > (Kind of Off-Topic) > > Micha Silver: > > As a further exercise, I took a small region of 540000 cells with > > floating point values, and using the "feature=area" option to r.to.vect > > I created a vector map of polygons. > > Hi Micha! I am curious about the 540.000 cells. This is _not_ really > small, is it? > > > It produced over 360000 polygons. > > I wonder how long it took? For me a r.to.vect feature=point process with > ~350.000 cells took more than 24 hours! > > Nikos > >
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