title: Two bar charts side by side with double y lable
body: <p>I want to plot a bar chart [MAT_LAB(:,2), MAT_LAB(:,3)] in single figure with double y-lable and range.</p>
  
  <pre><code>MAT_LAB=[ 1 4210 0.9915;
            2 4225  0.9951;
            3 4201  0.9894]
  bar(MAT_LAB(:,2),'stacked','BarWidth',0.3);
  hold;
  bar(MAT_LAB(:,3),'stacked','BarWidth',0.3);
  </code></pre>
  
  <p>It is not working.Range of y1 is 0-4500. Range of y2 is 0-1.</p>