https://forums.autodesk.com/t5/autocad-forum/conditional-formatting/m-p/5873732#M306448 <P>There is a program (not Autodesk related) called Surfer, which will create contour plots which can be exported in DXF format.</P> <P>&nbsp;</P> <P>I use it to create Halfcell plots.</P> Thu, 22 Oct 2015 16:08:04 GMT h_s_walker 2015-10-22T16:08:04Z