I am using the new transforms version of MPL (the svn trunk), and  
found a memory leak in pcolor and pcolormesh.  Be warned, I just  
reported a memory leak in the scikits delaunay package that Robert  
Kern was not able to reproduce, so it might be nice if someone could  
check this out.  I am on Mac OS X, 10.4 using the latest svn versions  
of numpy and mpl.  Here is the code that shows the leak:


from pylab import figure, close, ioff, savefig
from numpy.random import rand


ioff()

for n in range(1000):
     fig = figure()
     ax = fig.add_subplot(111)
     data = rand(1000, 1000)
     ax.pcolormesh(data)
     savefig('foo.png')
     close(fig)
     print n



I get over a gig in real and virtual memory (over 2 gig total) by  
n=30.  I tried both pcolor and pcolormesh, as well as deleting  
various objects, clearing the axis, etc.

-Rob

----
Rob Hetland, Associate Professor
Dept. of Oceanography, Texas A&M University
http://pong.tamu.edu/~rob
phone: 979-458-0096, fax: 979-845-6331



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