Hello, You have to connect Your vector map to database at first. Go to Databases->Manage database->New table (v.db.addtable) and run v.category afterwards.
Maris. 2011/3/31, Andrea Pogliaghi <[email protected]>: > Hi Maris, > > On Thu, Mar 31, 2011 at 10:25 AM, Maris Nartiss <[email protected]> wrote: > >> Hello, >> as attributes belong to triangle froming nodes, how should output look >> like? Every triangle should get all three atributes? And what about >> lines? Two attributes, as every triangulation line has two nodes at >> their end? >> >> It makes sense that no attribute is associated to v.delaunay lines output > because the features (lines in my case as I'm using the -l switch) are > different from the nodes (even if having an output attribute table > containing, for instance, the attributes of the two nodes of each line would > be useful), but that is not the point. > The issue I'm facing is that I want to create a new attribute table for > these delaunay_lines with a new unique cat value for every line and compute > the length of each line, as I need to know which is their min, max and avg. > > Cheers, > Andrea > > > >> >> Maris. >> >> 2011/3/30, Andrea Pogliaghi <[email protected]>: >> > Hi all, >> > ... >> > Basically I run v.delaunay with the -l option to get lines instead of >> > the >> > polygons, I get the resulting vector, but there is no attribute tables >> > associated to it. >> > ... >> > Ing. Andrea Pogliaghi >> > Milano - Italy >> > >> > _______________________________________________ grass-user mailing list [email protected] http://lists.osgeo.org/mailman/listinfo/grass-user
