title: matlab: how to plot different errorbars in bar graph
body: <p>i want to plot different errorbars <code>std_a/b/c</code> in my bar graph</p>
  
  <pre><code>a=5;  std_a=0.9;  
  b=6;  std_b=0.5;
  c=7;  std_c=0.2;
  
  %plot
  bar([a,b,c]);
  errorbar([a,b,c],[std_a,std_b,std_c]);
  </code></pre>
  
  <p>somehow this is not working. how can get for each bar the correct errorbar?</p>