Good afternoon,
I have a Multipatch Building Data Set (LOD2) (*.GDB). Consisting of wall and roof areas. Since only the roof areas are interesting for my further work, I would like to extract them into a 3D polygon. Unfortunately, there is no attribute that tells me that the polygon is a roof surface or a wall surface. Is there a transformer which separates the corresponding roof area? If this is not possible, my idea would be to calculate the inclination for each polygon and define all polygons with an inclination of ~90° as a wall. For this I would consider the transformer "SlopeCalculator". Is there perhaps a more efficient way to reduce the calculation of the inclination of several million polygons?
Thanks a lot.
