I have the following issue:
I want to model with several 3D layers to show regional variety of geological layer boundaries. Certain layers are actually lenses or channels and as such I don't want to grid these over the entire data set area as then you won't see the lens/channels anymore.
In a 2D contour map I would create break or fault lines, but in the 3D model the digitize option is greyed out as soon as I add a single 3D surface layer (The coordinate system tab in map view properties vanishes). So I can only make Breaklines without Z coordinate.
So the question: How do I get a breakline with Z coordinate? Will a breakline like this make a 3D surface layer within certain spatial limits?
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