On Fri, Dec 16, 2011 at 7:03 AM, Micha Silver <[email protected]> wrote: > I find that after running each of the v.lidar.* the resulting vector lacks > topology, so I can't view the categories: > > i.e. (after v.lidar.correct): > > GRASS 6.4.2RC1 (ITM):~/GIS/DEM/LIDAR_EinYahav > v.category south_correct > opt=report > ERROR: Unable to open vector map <south_correct@EinYahav_LIDAR> on level 2. > Try to rebuild vector topology by v.build. > Oops. v.category should not really need topology.
> So I run v.build, and then I get the vector with 4 different layers, each > with a different number of cat values (different max category). > > Is this what is supposed to happen? Should I add a v.build step between each > of the v.lidar.* stages? The v.lidar.* tools (as well as the v.surf.* tools) are supposed to work with massive point data for which topology is not needed. Most vector modules do require topology, however, so if you want to use those, you need to build topology, but I would not do that by default for point data. Markus M > > Thanks, > > Micha > > _______________________________________________ > grass-user mailing list > [email protected] > http://lists.osgeo.org/mailman/listinfo/grass-user _______________________________________________ grass-user mailing list [email protected] http://lists.osgeo.org/mailman/listinfo/grass-user
