[GRASS-user] Using a polygon as a Mask

Nikos Alexandris nikos.alexandris at felis.uni-freiburg.de
Thu May 27 13:58:51 EDT 2010


António Rocha wrote:
> What I am affraid is that when I convert Vector to RASTER I will obtain
> a mask that is not exacly the polygon in the boundaries of the polygon.
> For instance, if a pixel is "cuttted" by the polygons boundaries is it
> considered part odf the polygon or not?
--%<---

Antonio,

an idea: if you know the "real" scale of your vector map then you can decide 
(calculate) what the resolution of your raster map(s) would be. Then define 
your region with a higher resolution and expect to have a reliable conversion.

Hope this is is correct and not misleading, Nikos


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