title: how to display percentage of column gnuplot
body: <p>I have some data files that I need to plot. Im setting xtic to the 1st column, which contains large number, i.e., 1000 000, 2000 000, .., 10 000 0000
  using the command:</p>
  
  <pre><code>plot  "vec.dat" using 1:2:xtic(1) title 'line 1' with linespoints, 
  </code></pre>
  
  <p>However, x-axis looks ugly, as such large numbers are being displayed in the x-axis. Im interested in showing only percentage of such values, how can this be done in gnuplot?</p>
  
  <p>thanks in advance</p>