In the mbx SLOPESTI (slope estimator), I try to find out the value and the
direction of the slope at any specified point of a contour map. I use a "32
spoke wheel" that allows me to find out the nearest intersections with the
contour lines. Then I look for the shortest distance along the 16
Stephen:
I had a similar problem - I needed to find the distance from a number of
given points to their nearest contour line of a given height. This was
before I found this list, so I solved it in a typical O'Brien brute-force
manner, using a kind of binary chop algorithm:
For each point I
