Question:
Is there an easy way to create a spatial structure from a 2D model whereby the nodes in columns and lines will be extruded into walls?
Answer:
For lines, this option is already available directly in the shortcut menu. For extruding nodes into members and lines in surfaces, there is the corresponding option in the detailed settings of Copy/Rotate/Mirror. As soon as at least one copy is generated, the new elements will also be created.
If this feature is no longer wanted, it should be deactivated in the detailed settings again.