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I have a LAS dataset representing the groundsurface (also available in a point feature class) and a polyline Z feature class. Is it possible to determine where the polyline z is above the ground surface also taking into account in between the vertices?

@sibe​ if you generate a DEM from your LAS and then drape a copy of your line onto the the surface, you can use more or less the same as I described for you here


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