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Assuming the LineStrings are digitized in the correct order (start point is most elevated), running SELECT ln_id, vtx_id, geom FROM ( SELECT ln.<id> AS ln_id, dmp.path[1] AS vtx_id, dmp.geom, ST_Z(dmp.geom) < LAG(ST_Z(dmp.geom)) OVER(PARTITION BY ln.<id> ORDER BY dmp.path[1]) AS is_valid FROM &...


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You probably don't have to export the 3D view. This is just a visualisation. The source data is what you want to be looking at. Am guessing that your source data is going to be a Digital Elevation Model (DEM) or TIN. Possibly a raster gridded dataset might be suitable also. All of this will of course depend on what Rhino can support as an input file. The ...


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