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

[Rich Shepard]

On Thu, 30 Mar 2017, Rich Shepard wrote:

> 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.

   How do I add a line between two specific points using the vector digitizer
in the GUI map display window?

   Clicking on one point, then on the other point does not show a line
between the two points.

   Clicking on one point and dragging the cursor to the other point before
releasing the button also does not display a line between the two points.

   Clue stick needed.

Rich