title: matplotlib (equal unit length): with 'equal' aspect ratio z-axis is not equal to x- and y-
body: <p>When I set up an equal aspect ratio for a 3d graph, the <code>z-axis</code> does not change to 'equal'. So this:</p>
  <pre><code>fig = pylab.figure()
  mesFig = fig.gca(projection='3d', adjustable='box')
  mesFig.axis('equal')
  mesFig.plot(xC, yC, zC, 'r.')
  mesFig.plot(xO, yO, zO, 'b.')
  pyplot.show()
  </code></pre>
  <p>Gives me the following:</p>
  <p><img src="https://i.stack.imgur.com/fBLgf.png" alt="img1" /></p>
  <p>Where obviously the unit length of z-axis is not equal to x- and y- units.</p>
  <p>How can I make the unit length of all three axes equal? All the solutions I found did not work.</p>