title: Shading a rectangle
body: <p>Consider the rectangle formed by the vertices (0, 0), (0, 10), (1, 10), and (1, 0). How would I shade it red in MATLAB? </p>
  
  <p><em>Note.</em> For some reason, none of the mentioned shadings <a href="http://www.mathworks.com/help/symbolic/mupad_ref/fillpattern.html" rel="nofollow">here</a> works. </p>