Traceback (most recent call last):
  File "<string>", line 1, in ?
  File "/usr/local/lib/python2.4/site-packages/matplotlib/pylab.py", line 796, in savefig
    return fig.savefig(*args, **kwargs)
  File "/usr/local/lib/python2.4/site-packages/matplotlib/figure.py", line 732, in savefig
    self.canvas.print_figure(*args, **kwargs)
  File "/usr/local/lib/python2.4/site-packages/matplotlib/backends/backend_gtkagg.py", line 114, in print_figure
    orientation, **kwargs)
  File "/usr/local/lib/python2.4/site-packages/matplotlib/backends/backend_agg.py", line 483, in print_figure
    orientation, **kwargs)
  File "/usr/local/lib/python2.4/site-packages/matplotlib/backends/backend_svg.py", line 330, in print_figure
    self.figure.draw(renderer)
  File "/usr/local/lib/python2.4/site-packages/matplotlib/figure.py", line 574, in draw
    for a in self.axes: a.draw(renderer)
  File "/usr/local/lib/python2.4/site-packages/matplotlib/axes.py", line 1285, in draw
    a.draw(renderer)
  File "/usr/local/lib/python2.4/site-packages/matplotlib/axis.py", line 601, in draw
    tick.draw(renderer)
  File "/usr/local/lib/python2.4/site-packages/matplotlib/axis.py", line 176, in draw
    if self.label1On: self.label1.draw(renderer)
  File "/usr/local/lib/python2.4/site-packages/matplotlib/text.py", line 905, in draw
    Text.draw(self, renderer)
  File "/usr/local/lib/python2.4/site-packages/matplotlib/text.py", line 415, in draw
    self._fontproperties, angle)
  File "/usr/local/lib/python2.4/site-packages/matplotlib/backend_bases.py", line 383, in draw_tex
    raise NotImplementedError
NotImplementedError