Traceback (most recent call last):
  File "test_plot3D.py", line 25, in <module>
    ax.plot_wireframe(X, Y, Z)
  File "/usr/lib/python2.5/site-packages/matplotlib/axes3d.py", line 562, in plot_wireframe
    txlines = [tX[i] for i in cii]
IndexError: index out of bounds