Eric Firing wrote: > Jordan, > > Thanks, now I see the problem and where it is coming from. In > contour.py, near the bottom, in the contourf method, change the > linewidth from 1 to 0.01, so the line reads: > col = PolyCollection(nlist, linewidths=(0.01,)) > > I think this will be OK; based on the comment below the line, I think > I found that using a linewidth of zero was problematic, so I probably > simply used 1 thinking it was small enough not to matter. > > I will need to make a corresponding change in the CVS version so that > it will get into the next release. I'll do that this evening. > Sorry about this, but that patch doesn't seem to work. When I open the eps files generated with this change implimented, I get the artifact problem mentioned in the comment; fine lines at the boundaries of the contouring engine's subdomains. In fact, I get the artifacts at linewidths as large as 0.5. Jordan