Tick labels in mplot3d?

I would like to add tick labels to a 3d plot, but so far have had no
luck. I would like to start with something like the bars3d example:
http://matplotlib.sourceforge.net/examples/mplot3d/bars3d_demo.html

But I would like to have each bar chart labeled by its tick on the
y-axis. The traditional ax.yaxis.set_ticklabels() method has no
effect, and the ax.yaxis.set_ticks() just messes up the output
catastrophically.

My attempt at modifying the example is below. Any thoughts?

Thanks,
Jeff

···

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from mpl_toolkits.mplot3d import Axes3D
import matplotlib.pyplot as plt
import numpy as np

fig = plt.figure()
ax = Axes3D(fig)
for c, z in zip(['r', 'g', 'b', 'y'], [30, 20, 10, 0]):
    xs = np.arange(20)
    ys = np.random.rand(20)
    ax.bar(xs, ys, zs=z, zdir='y', color=c, alpha=0.8)

## My changes
ax.yaxis.set_ticks([0, 10, 20, 30]) # This totally screws things up
ax.yaxis.set_ticklabels(['first', 'second', 'third', 'fourth']) # This
does absolutely nothing
## End my changes

ax.set_xlabel('X')
ax.set_ylabel('Y')
ax.set_zlabel('Z')

plt.show()
------------------------

Jeff Klukas, Research Assistant, Physics
University of Wisconsin -- Madison
jeff.klukas@...3030... | jeffyklukas@...3031... | jeffklukas@...3032...
http://www.hep.wisc.edu/~jklukas/