Calculate 3D surface length from a DEM
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08-25-2023 01:01 AM
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Trying to calculate the 3D surface length of a polyline on a DEM.
Using the Add surface information & interpolate shape tools both work but return almost identical number if not the same value. Over a 50km DEM with changing elevation it should be more than the 2D length. See attached image. Both 2D shape length and 3D Shape Length identical at 45.031Km
Seen a similar post on here but no solution as to why the value returns the same.
