title: matplotlib - increase resolution to see details
body: <p>I have a big process that is composed of tasks (about 600), and I created a figure to watch the order they are launched with and the time they take. To do this, I used matplotlib and a barh.</p>
  
  <p>The figure is ok (my 1st matplotlib success !), but:</p>
  
  <ul>
  <li>I would like to see the details and zoom on the picture when exported (as PNG, for instance), as the zoom option allows when matplotlib displays the result with the <code>show()</code> command</li>
  <li>the legends of the Y axis are too close and unreadable</li>
  </ul>
  
  <p>I tried to increase the resolution as said in <a href="https://stackoverflow.com/questions/332289/how-do-you-change-the-size-of-figures-drawn-with-matplotlib">this other SO post</a>, this is better but details are not precise enough. Here are my results so far:</p>
  
  <ul>
  <li>full result</li>
  </ul>
  
  <p><img src="https://i.stack.imgur.com/zPiKm.png" alt="full"></p>
  
  <ul>
  <li>zoom with matplotlib</li>
  </ul>
  
  <p><img src="https://i.stack.imgur.com/cWLVY.png" alt="zoom"></p>
  
  <p>Do you know how I could improve readability ? Thanks a lot (else, all my efforts would be useless, I'm afraid...)</p>
  
  <p>PS: I'm using matplotlib 1.1.1 and python 2.7.</p>