Hi Ulli:
I would try converting the contour lines to points first, then generating a DEM. We use this workflow from time to time when we do not have a high quality DEM to work with. Kirk From: Qgis-user [mailto:qgis-user-boun...@lists.osgeo.org] On Behalf Of Ulrich Kriechbaum Sent: Thursday, November 08, 2018 7:10 AM To: qgis-user@lists.osgeo.org Subject: [Qgis-user] Creating DEM from Contour lines Hello all! I investigate a Glacial Lake Outburst Flood which eroded a lot of material. What i try to do is to backcalculate the event with the simulation tool r.avaflow. For my simulations i need a Pre-Event DEM. I have a Post-Event DEM where the eroded trench is clearly visible. So what i did was to project the Contour lines of the Post-DEM, change them so that the trench is "flattened". Now i try to generate a Pre-Event DEM with these Contour lines. That's the point at which i am struugling. I tried to interpolate the Contour lines (TIN and IDW) but the results were not really satisfying. Does anyone have an idea how to get a nice DEM from contour lines? Best regards, Ulli
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