title: Creating a TreeMap visualization
body: <p>I want the algorithm for creating a Treemap visualization.</p>
  
  <p>Something like this: <a href="http://flowingdata.com/2010/02/11/an-easy-way-to-make-a-treemap/" rel="nofollow noreferrer">An Easy Way to Make a Treemap</a></p>
  
  <p>Problem is that I do not want to use R ... and I want the source-code. Preferably in Python or Java.</p>
  
  <p>Thing is that I have to customize it ... instead of colors I want images, so something that gives me coordinates would be awesome.</p>
  
  <p>Thanks,</p>