title: MATLAB, Filling in the area between two sets of data, lines in one figure
body: <p>I have a question about using the <code>area</code> function; or perhaps another function is in order...
  I created this plot from a large text file:</p>
  
  <p><img src="https://i.stack.imgur.com/H82a3.jpg" alt="http://img818.imageshack.us/img818/9519/iwantthisareafilledin.jpg"></p>
  
  <p>The green and the blue represent two different files. What I want to do is fill in the area between the red line and each run, respectively. I can create an area plot with a similar idea, but when I plot them on the same figure, they do not overlap correctly. Essentially, 4 plots would be on one figure.</p>
  
  <p>I hope this makes sense.</p>