I seem to have missed something out of the grass57 tutorials. I have imported some an arc line coverage, converted it to boundaries, and built it as polygons. However, I can't figure out how to assign the attribute from the boundaries to the finished polygons. This should be possible, as the input vectors were doubled along common boundaries (not topological). What I don't want to have to do is to use v.extract to extract each category to a new map, assign the attributes to that map, then patch them all back together. Is there some way to automatically generate centroids?
David Mahoney
David Mahoney wrote:
I seem to have missed something out of the grass57 tutorials. I have imported some an arc line coverage, converted it to boundaries, and built it as polygons. However, I can't figure out how to assign the attribute from the boundaries to the finished polygons. This should be possible, as the input vectors were doubled along common boundaries (not topological). What I don't want to have to do is to use v.extract to extract each category to a new map, assign the attributes to that map, then patch them all back together. Is there some way to automatically generate centroids?
David Mahoney
Centroids are generated by v.in.ogr for polygons. You could convert
your lines by a script to GML with polygons for example.
Radim