title: Re-tic axis in gnuplot
body: <p>I want to show how used space changes on my disk by drawing a figure with x-axis the sampling time point and y-axis storage used on disk.
  However, currently, the storage used is recorded in bytes, which is not human-readable when value goes beyond GB.</p>
  
  <p>So, could I re-tic axis in gnuplot? In my case, could I change the value <code>100000000</code>, for example, into <code>100MB</code>?</p>
  
  <p>Thanks and Best Regards.</p>