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First of all, I want to apologize because I am a beginner in this area and not a native English speaker, so sorry if I ask simple questions or if I am hard to understand.

So I have DEM files in the form of ASC files representing squares of 5 km and a resolution of 5 m (so 1 million points/file). What I want to do is import them in Blender to edit them and study them. I am able to convert the ASC files to TIF files and import them to as points cloud with the BlenderGIS plugin but then I need to skin them with a plugin which make mistakes and the files are far too large to be corrected manually. The other method i tried was to import the file in Blender "As DEM" and it work great but when I switch to edit mode, the mesh is flat and I cannot edit it the way I need. Do you see any method or tool that I can use to help me ?

As I said, I am a real beginner and I may have missed something obvious so if you think of anything please try to help me !

3

You can:

  1. Load the DEM into QGIS
  2. use the QGIS tool to draw contour lines based on the DEM (tutorial here)

enter image description here

  1. save the contour lines as a SHP (shapefile)
  2. import the SHP in Blender using BlenderGIS
  3. also using BlenderGIS, make a TIN (triangular irregular network) using the Delaunay function. Then, you will have your terrain as a mesh.

enter image description here

For more info, see this question.

Hope it helps.

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