[matplotlib-devel] contourf linewidth=1 help request

[Jordan D. <fre...@oc...>]

Hi, I hope this is the proper place to send this message.  I'm using 
matplotlib to make contourf plots with contour overlays.  My problem is 
that I want to be able to use .25 pica lines for the overlaid contours, 
but since contourf demands a linethickness of 1. to avoid artifacts (due 
to the simply-connected domain contour algorhithm), the .25 contours 
don't actually fit the contourf right; there will be a thin line of 
color from the next contour around the contourf before the .25 pica line 
appears.  This annoys me to no end.

Currently I'm fixing it by plotting everything 4x larger than normal and 
then shrinking the eps files down in Illustrator, but this is not an 
ideal solution, since (for example) all the axis labels are in the wrong 
position at this size.  My question is, how hard would it be to fix the 
contour code so that contourf's linethickness argument could be 
changed?  Where in the codebase would I look to start hacking?  In the 
contouring code?  In the python code that accepts the contour algorithm 
output?  I don't want to spend hours hunting through the code for the 
right place to start modifying things...

Jordan