how can i make contour drawing in inventor?
If you can line up the 2D contour drawing (say on the XY Plane) with the corresponding elevation plot (on the YZ or XZ plane), create a 3D sketch and use the "Intersection Curve" command to create the actual profile curves. Then use the Loft command, as AnMay suggests, to create the surface model from the profile curves. If you have any questions, please do not hesitate to contact me. Hope this helps and have a most blessed night!