title: python-matplotlib AttributeError Axes3D object has no attribute set_zticks
body: <p>I am trying to replicate one of the examples in scikit-learn, <a href="http://scikit-learn.org/stable/auto_examples/datasets/plot_iris_dataset.html" rel="nofollow noreferrer">plot_iris_dataset.py</a>.  I believe I have the latest python-matplotlib (as of Feb. 8 2013), but I am getting an error trying to call set_zticks(()) method in Axes3D object.  I won't copy all the code, but it's like so:</p>
  
  <pre><code>...
  ax = Axes3D(fig, elev=-150, azim=110)
  ...
  ax.set_zticks(()
  </code></pre>
  
  <p>gives an error:</p>
  
  <pre><code>AttributeError: 'Axes3D' object has no attribute 'set_zticks'
  </code></pre>
  
  <p>Since I'm new to scikit-learn and matplotlib, I'm not really sure what the call is supposed to do.  If I comment it out, I get a 3-D plot just fine (the rest of the code on the above page works).  I've tried some googling but haven't found a work-around for this, but am getting hints that maybe this kind of call is outdated.  I figured I'd post a question on stackoverflow hoping someone can clarify for me or others.</p>
  
  <p>EDIT: I now notice that the call is supposed to remove the tick marks.  It doesn't appear to work for any direction, x, y, or z, but I only get the error for the z-direction.  Here's how my graph appears (the data points aren't saving in the PNG file for some reason)<img src="https://i.stack.imgur.com/9tVpD.png" alt="My plot, notice the tick marks in all dimensions"></p>
  
  <p>Other references:</p>
  
  <ul>
  <li><a href="http://comments.gmane.org/gmane.comp.python.matplotlib.general/27686" rel="nofollow noreferrer">a message thread elsewhere</a> saying that this bug maybe is fixed in later versions.</li>
  <li><a href="http://thread.gmane.org/gmane.comp.python.matplotlib.devel/8860/focus=9039" rel="nofollow noreferrer">this page gets a google hit</a> but I don't understand it or see reference to zticks.</li>
  </ul>