title: gnuplot x-axis values format
body: <p>I am trying to create a plot using gnuplot with bytes on the x axis with range <code>[4:4194304]</code>. However it is not very convenient to show bytes on X, rather it will look more readable if there will be bytes [1,512), kilobytes [1K,512K), megabytes [1M,512M), etc.</p>
  
  <p>I have not found a clear way to do this in the documentation. Should I generate it in an input data file explicitly?</p>
  
  <p>Best regards,
  Alex</p>