Am 2. November 2018 10:13:10 MEZ schrieb Mithoefer <[email protected]>: >Dear List, > >I use GRASS GIS 7.4 to calculate traveling distances using v.net.iso >based on OSM data. I used v.clean to basically clean the data. > >If I run an analysis based for distances I get an result, but using >costs in terms of traveling time it fails. I do not get cat values for >the classes I defined. These are my GRASS GIS queries: > >For Distances: >---------------- >v.net.iso input=strassen_net output=strassen_net_iso center_cats=1 >costs=1000,2000,5000 --o > >For traveling time: the column acost / bcost = values in minutes >---------------- >v.net.iso input=strassen_net output=strassen_cost_iso arc_column=acost >center_cats=1 costs=10,20,30 --o > >What could be the problem? The processing log says, that one entry in >the database for a line could not be found. However, the same network >works for distances.
AFAIK, the module does not use the attribute table when calculating distance, so if there is a problem with the attribute data, might only show in the second case. Please send us the log. And ideally also the definition and a few examples lines of the attribute table. Moritz _______________________________________________ grass-user mailing list [email protected] https://lists.osgeo.org/mailman/listinfo/grass-user
