title: Given a handle of a subplot, how to obtain all its associated colorbar handles?
body: <p>Take the follow code for example:</p>
  
  <pre><code>Hsp=subplot(1,2,1);
  
  image(rand(5,5));
  
  Hc=colorbar;
  
  subplot(1,2,2);
  
  image(rand(5,6));
  
  colorbar;
  </code></pre>
  
  <p>My question is how to obtain <code>Hc</code>, given only <code>Hsp</code>.</p>
  
  <p>As is known, the type of a colorbar is <code>axes</code>. So I tried to search all the children of the subplot.</p>
  
  <pre><code>Hs=findall(Hsp,'type','axes');
  </code></pre>
  
  <p>But, there is no value in <code>Hs</code> which matches <code>Hc</code>.</p>