2017-03-30 12:00 GMT-06:00 Rich Shepard <[email protected]>: > On Thu, 30 Mar 2017, Laurent C. wrote: > >> If you want to 'open' the culvert, you'll have to cut through the road. >> You can do this with r.carve, for example. > > > Certainly worth doing. The r.carve manual page requires as input a vector > map containing streams. Having only two points (culvert inlet and outlet), I > suppose the idea is to create a stream between those two points. > > Would the process be to use v.edit on a copy (called 'stream') of the > culvert point map to generate a straight line between the two points? That > would provide the vector input r.carve wants.
Rich, You can create a new vector map and create a line that link the two points. However, r.carve will interpolate the elevation between the start point and the end point. If you culvert invert have a lower elevation, this will not show up. But considering the amount of simplification you're already applying, it could be acceptable. Regards, Laurent _______________________________________________ grass-user mailing list [email protected] https://lists.osgeo.org/mailman/listinfo/grass-user
