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

[Rich Shepard]

On Thu, 30 Mar 2017, Laurent C. wrote:

> 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.

Laurent,

   Have this line in a vector map called 'stream.'

> 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.

   The invert has a slightly higher elevation than the outfall. Both are
lower than the elevation of the road over the culvert.

   Will try this and see how it compares to the base map.

Thanks,

Rich