[GRASS-user] r.mapcalc: compare two maps [RESOLVED]

[Rich Shepard]

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