algorithmic modeling for Rhino
There are about 60.000 polygon and you are trying to extrude them at once. It is probably the reason that Rhino crashes because not enough memory to do it so!
I recommend you to use filter options in the component and reduce the number of the shapes to extrude at once. In the dataset there might be a feature that you can filter data by region or zipcode. Then extrude the polygons, i also suggest make surface from polygons first and extrude the surface instead closed polyline. Also flatten the inputs of extrusion.
first of all thank you for the reply.
in the dataset I haven't found the zipcode data.
I have made the surface from polygons and then I have extruded the surface:
I have read that the scale is 1:2000 so I have divided the building height for this value but the extrusion is still very high so I have tryed to divide for 2000000 but the height of building is very small. A reasonable value could be 200000:
I will verify this value by measuring some lengths known..