Hai, can i ask that how to create contour based on point cloud in Revit Architecture 2013? I had see there is toposurface from manage & site menu bar there and the topo can create through import data but inform of CSV file. However, i just only have point cloud data in file format of xyz, pts,dxf. I need to create a contour or toposurface base on point cloud. Can teach me how to do it?