title: gnuplot histogram: How to put values on top of bars
body: <p>I have the following data:</p>
  
  <pre><code>1   3215
  2   321
  ...
  31_60   59
  60+   32
  </code></pre>
  
  <p>I would like to generate histogram using gnuplot and put the value of bar on top of it.</p>
  
  <p>Here is the gnuplot command I tried to create histogram:</p>
  
  <pre><code>set style data histogram
  set xtics rotate
  plot 'file.dat' using 2:xtic(1)
  </code></pre>
  
  <p>Can someone tell me how to add values on top of the bars generated?</p>
  
  <p>I found the following link related histogram (<a href="http://gnuplot-tricks.blogspot.com/2009/10/more-on-histograms.html" rel="noreferrer">http://gnuplot-tricks.blogspot.com/2009/10/more-on-histograms.html</a>), but didnt get what its doing exactly.</p>