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How to clip polyline with z value where it would intersect DEM value?

Question asked by gderner on Apr 5, 2015
Latest reply on Apr 11, 2015 by sephefox

I hope the question is pretty straightforward.  What would be the workflow if I had a polyline with a certain z value that represents an elevation and I wanted to clip it where it's value is greater than the underlying DEM?   Imagine, if you will, a polyline drawn across a river valley, for instance.  If it had an value of 800 ft, I would like to clip it to length where the DEM values are less than the polyline z value....essentially creating an elevation top width.