Hi, I submitted a new patch on the tracker. When I was playing with the contour routine in mplot3d and using the extend3d keyword it would error out. I’ve attached a sample program to display the error as well as the dataset I was using. Please feel free to contact me if there are any questions regarding this.

Ryan Wagner

Support/Consulting Engineer

Visual Numerics Inc.

rwagner-ioOG6gXtPvA@public.gmane.org