Hello, Below, the computational region setting : -------------------------------------------------------------------- projection: 99 (Lambert Conformal Conic) zone: 0 datum: towgs84=0,0,0,0,0,0,0 ellipsoid: grs80 north: 7037330.05419347 south: -0.94580653 west: 0 east: 798655 nsres: 1 ewres: 1 rows: 46916 cols: 5324 cells: 249780784 --------------------------------------------------------------------
When i modify the resolution nres/ewres from 1 to "150", i have no longer error message. But when i try a process with a resolution with a value < 150, the process is endless... According to you, the results generated at this resolution (150) would be relevant? valid? I loaded the output vector into qgis. The results are seem incoherent. The curves show that we can go in 15 minutes on the other side of Paris! In reality, From my starting point we would go much further toward toward north than south west... I use OSM data. I edited and populated the max speed field thanks to the value of another filed (type of road). How to explain this incoherence? Due to v.isochrones? Due to resolution? Due to input maxspeed values ? I am annoyed because it seems impossible to generate the results for a better resolution than 150. Thanks. I paste below a SS representing results. <http://osgeo-org.1560.x6.nabble.com/file/n5200009/SS_v.jpg> Thanks. -- View this message in context: http://osgeo-org.1560.x6.nabble.com/v-isochrones-error-message-tp5199989p5200009.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
