Thanx again Markus, you always saving me :D patch followed by v.clean with break,rmdupl and later v.build make it really fast!
Markus Metz-2 wrote: > > If you just want to create one big vector with all features present in > several other vectors, try v.patch followed by v.clean. > > For cleaning after patching areas, you will need at least to break > polygons and remove duplicates. If topology is still not correct, try > cleaning small angles at nodes followed by breaking lines, then remove > duplicates. If topology is still not correct, snapping vertices may be > necessary, here try a very small threshold first. Also see the v.patch > manual. > > Hope that helps, > > Markus > > > incanus wrote: >> Hi all, >> I'm trying to join a large set of "vectorial tiles" that i have, into a >> unique vectorial map. What i'm doing is something like this, for each >> "tile" >> (in the example is called filaN): >> >> v.overlay ainput=sumaFilas atype=area alayer=1 binput=fila6 btype=area >> blayer=1 output=sumaFilas2 operator=or olayer=1,0,0 >> v.db.addcol map=sumaFilas2 layer=1 'columns=union INTEGER' >> v.db.update map=sumaFilas2 layer=1 column=union value=1 >> v.dissolve input=sumaFilas2 output=sumaFilas2 layer=1 column=union >> --overwrite >> g.remove vect=sumaFilas >> g.rename vect=sumaFilas2,sumaFilas >> >> At first, the v.overlay is instant, but when processing the map number >> 100, >> it can be several hours. >> >> Anyone knows an alternate way to do this? >> The first solution I adopted was making this by rows of 100 "tiles", and >> then joining the rows (what i'm doing in the example above). It worked >> for >> me since i only has todo a "small" map (1 week of processing), but now i >> need to do one MUCH more big. >> >> Thanx in advance if anyone knows something.. or not :) >> Andres >> > _______________________________________________ > grass-user mailing list > [email protected] > http://lists.osgeo.org/mailman/listinfo/grass-user > > -- View this message in context: http://n2.nabble.com/V-overlay-very-slow-tp4169783p4170405.html Sent from the Grass - Users mailing list archive at Nabble.com. _______________________________________________ grass-user mailing list [email protected] http://lists.osgeo.org/mailman/listinfo/grass-user
