i think i have figured out where my problem lies. It is in the centre node costs... from the manual is says right at the top that centre node must be opened (costs >= 0). however i have not defined costs for the centre node at any point... could this be the issue? how do i go about defining costs for the centre node?
-- View this message in context: http://osgeo-org.1803224.n2.nabble.com/Drivetime-Isochrones-tp6479604p6515373.html Sent from the Grass - Users mailing list archive at Nabble.com. _______________________________________________ grass-user mailing list grass-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/grass-user