title: How to save a figure remotely with pylab?
body: <p>I'm trying to generate a figure at a remote computer with the command <code>pylab.savefig</code>.
  But I got such error:</p>
  
  <pre><code>Unable to access the X Display, is $DISPLAY set properly?
  </code></pre>
  
  <p>How can I save the figure properly?</p>