Hello Hamish Regarding the v.centroids it worked. Thanks (and thanks Antonio)...
About v.category I suppose I have to do the following: 1- Create boundaries in TclTk Digitizer 2- v.category input=test...@user1 output=output type=boundary,area step=0 3- v.to.rast this and it worked Before I convert to raster, how can i define all boundaries/with Centroids with the same cat value? Thanks 2010/7/27 Hamish <hamis...@yahoo.com> > Luisa Peña wrote: > > I have created a Vectorial using GRASS vector digitizer without > > categories. > > most vector modules require features to have categories if they > are to be processed. > > > How can I add a category to the vectorials in order to agfter > > that, run v.to.rast? > > v.category or v.centroids will do it. > > "areas" in GRASS are really boundaries (no category) with a > centroid point inside them (centroid has the category). > > > regards, > Hamish > > > >
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