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I am trying to calculate the average percent slope of a hillside on either site of a data point. I tried extracting info from a DEM using a radius around the point, but I believe a more accurate result will be from a vector passing through the point extending equal distance above and below perpendicular to the slope. I have derived aspect info for each point and could use that to align the vector... if I understood how, and of course if it is possible. I am using ArcGIS 10.3.

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