In the past I got some holes instance of overlapping after slope reclassification, but by now I have decided that the problem was in the original DTM raster. This is a guess but making some basics stats on it I realized that the lowest value was 0 being my DTM for an inland area, so I did a reclassification of those zero values to null (this can be done easily in sextante with the new document tab) and I was able to do slope, slope reclassification and vectorization w/o further troubles. So check your original dtm just in case. Agustin
> Dietrich Schröder ha scritto: > > 3) Using the vectorize tool for polygons from Sextante, I got some > > problems for complex polygons, i.e. polygons with holes. For instance, > > if you want to create from a DEM polygons with height classes, the lower > > height classes of cause will contain the higher ones, so the lower > > height classes should have holes. But my results dont have any holes, > > but they are overlapped by the other polygons. For a map it makes no > > difference, but you cant use these data for further analysis > > Dietrich, > which Sextante version are you using? I have reclassified a DTM in > reference to some heigth classes and then I applied the Vectorize raster > layer (polygons) tool: it works fine with the latest Sextante nightly > build [1]. There's no trace of overlapping polygons. > > Best regards, > Antonio > > [1] http://forge.osor.eu/plugins/wiki/index.php?Downloads&id=13&type=g > > -- > Antonio Falciano > http://www.linkedin.com/in/antoniofalciano > > > > > > _______________________________________________ > Gvsig_internacional mailing list > Gvsig_internacional@listserv.gva.es > http://listserv.gva.es/cgi-bin/mailman/listinfo/gvsig_internacional > > _______________________________________________ Gvsig_internacional mailing list Gvsig_internacional@listserv.gva.es http://listserv.gva.es/cgi-bin/mailman/listinfo/gvsig_internacional
