[Qgis-user] Inflection point of a terrain

[Patrick Marx]

Hi all, I would like to find the contour line in a dem at the inflection point of the slope. I mean, I would like to know at which height the terrain is changing from convex to concave. I found plugins which calculate if a specific cell is convex or concave in relation to its neighbours in a 3 x 3 raster. But I would like to know it for a specific terrain.Does anyone has an idea?Regards Patrick
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