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One approach is to create polygons from the cliff areas eg Raster Calculator with Slope > 60, then Polygonize. Then, largely follow the steps outlined in this answer to split the polygons into roughly equal areas. This allows you to break up long/large cliff areas into smaller chunks. Because cliff areas tend to be skinny, I found the centroids often lay ...


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The example you cribbed from claims that OpenElevation API uses 1 arc-second SRTM data (about 30M spacing), which should give a result much closer to what you are seeing from Google. However, a comment to this answer on GIS.SE says that the host-your-own package provides a script to load 250M data, which would give a result more like what you're seeing. ...


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He is a suggested workflow for you to follow: Make sure your blue lines and green points share a common ID value (integer) that links them Convert your line to raster based upon that ID, use the Polyline to Raster tool Extract from the DEM the cells under the raster line using Extract by Mask Identify the elevation under your green point for that line, you ...


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