title: How to plot rownames and column names for a heatmap with matplotlib?
body: <p>This is a very basic question.  I could not find a satisfactory answer anywhere else so I am writing this up as a question here.  I have a matrix, a square matrix about 1300 x 1300.  I can use <code>matplotlib</code> to generate a heatmap from it.  However, I want the row and column names to show up on the heat map instead of the 0 -- 1300 that normally shows up when i use <code>imshow</code>.</p>
  
  <p>I will put up an example shortly.</p>