title: Put two y-axes on an imagesc image in MATLAB
body: <p>I have what I think is a simple problem: I have a matrix that I image using <code>imagesc</code>. I simply want to show a second y-axis on the right hand side of the image. How do I do that? Example:</p>
  
  <pre><code>clear all;
  aMatrix = rand(20,30);
  yAxis1 = 32.*(1:size(aMatrix,1));
  yAxis2 = 165.*(1:size(aMatrix,1));
  xAxis = 1:size(aMatrix,2);
  imagesc(yAxis1, xAxis1, aMatrix);
  </code></pre>
  
  <p>The following will show the image with <code>yAxis1</code>, on the left hand side. That is great, but how do I show <code>yAxis2</code> on the right hand side of the image <em>at the same time</em>? Thanks.</p>