Hi, I am having some trouble trying to break road lines from a TIGER/Line file at intersections.
I followed advice in another thread, but I cannot get v.clean to do anything useful. I performed the following command equivalents using the GUI: v.patch [EMAIL PROTECTED] output=preint v.clean [EMAIL PROTECTED] output=tempfile type=line,boundary error=intersections tool=break I have verified that GRASS does in fact recognize the shape file as containing lines. If I try to display the error vector layer, nothing is displayed (because nothing is written to the layer). How can I solve this? Your help is greatly appreciated. Thanks, Ryan -------------------------------------------------- Tool: Threshold Break: 0.000000e+00 -------------------------------------------------- Copying vector lines... Rebuilding parts of topology... Building topology ... Registering lines: 1000 2000 3000 4000 5000 6000 7000 8000 9000 10000 11000 12000 13000 14000 15000 16000 17000 18000 19000 20000 21000 22000 23000 24000 25000 26000 27000 28000 29000 30000 31000 32000 32493 primitives registered Topology was built. Number of nodes : 26669 Number of primitives: 32493 Number of points : 0 Number of lines : 32493 Number of boundaries: 0 Number of centroids : 0 Number of areas : - Number of isles : - -------------------------------------------------- Tool: Break lines at intersections Intersections: 0 Intersections: 0 (line 485) Intersections: 0 (line 984) ..... (repeats about 100 times) Intersections: 0 -------------------------------------------------- Rebuilding topology for output vector map... Building topology ... Registering lines: 1000 2000 3000 4000 5000 6000 7000 8000 9000 10000 11000 12000 13000 14000 15000 16000 17000 18000 19000 20000 21000 22000 23000 24000 25000 26000 27000 28000 29000 30000 31000 32000 32493 primitives registered Building areas: 0 areas built 0 isles built Attaching islands: Attaching centroids: Topology was built. Number of nodes : 26669 Number of primitives: 32493 Number of points : 0 Number of lines : 32493 Number of boundaries: 0 Number of centroids : 0 Number of areas : 0 Number of isles : 0 -------------------------------------------------- Building topology for error vector map... Building topology ... Registering lines: 0 primitives registered Building areas: 0 areas built 0 isles built Attaching islands: Attaching centroids: Topology was built. Number of nodes : 0 Number of primitives: 0 Number of points : 0 Number of lines : 0 Number of boundaries: 0 Number of centroids : 0 Number of areas : 0 Number of isles : 0 -- View this message in context: http://www.nabble.com/Problem-with-v.clean-and-Breaking-at-Intersections-tp19466729p19466729.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
