When I am using the nurbscurve by points to create a curve and trying to import it into civil3D model using Modelspace.bygeometry, the output is showing as null. It’s not reflecting in the C3D space For your reference I have attached screenshot of the dynamo space.
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Which object you’re trying to Create? 3D Polyline, Line or Polyline?
@mzjensen did a really good summary of Autocad objects that can be created from Dynamo geometry: Polyline3D to Surface
I am trying to create a 3D polyline
Nurbs curves are not covered