On 09/12/14 17:37, image93 wrote:
Hello,
Thank you very much. The v.isochrones seems to require in input a vector
network (roads) with a speed attributes column. I have just checked my
openstreetmap roads vector layer. And this column is not fully completed,
data are lacking for many routes. How can I do? According to you, before
applying v.isochrones, should I do anything on the input data (editing about
attributes or/and geometry/topology) ?
v.isochrones does not require a topologically clean network. If possible
errors (e.g. non-closures) are below resolution size, they should not
even make any difference.
As mentioned privately, I actually haven't tested the module with
missing speed attribute data, so I don't know the consequences and don't
have time currently to look into that.
Moritz
_______________________________________________
grass-user mailing list
[email protected]
http://lists.osgeo.org/mailman/listinfo/grass-user
