<html><body><div dir="ltr" text-align="left"><div dir="ltr" text-align="left"><div dir="ltr" text-align="left"><div style="color: rgb(33, 33, 33); background-color: rgb(255, 255, 255); text-align: left;" dir="ltr">Hi all, </div><div style="color: rgb(33, 33, 33); background-color: rgb(255, 255, 255); text-align: left;" dir="ltr">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.</div><div style="color: rgb(33, 33, 33); background-color: rgb(255, 255, 255); text-align: left;" dir="ltr">Does anyone has an idea?</div></div><div id="ms-outlook-mobile-signature"><div dir="ltr" style="text-align: left;">Regards Patrick</div></div></div></div></body></html>