title: gnuplot, two y-ranges far apart
body: <p>Is it possible to plot two ranges which are far apart each other?</p>
  
  <p>I mean, if I have a dataset like [ 1, 2, 3, 1001, 1001, 1003 ],
  can I draw a plot like this?</p>
  
  <pre><code>     |
  1003 |     x
  1002 |     x
  1001 |     x
  1000 |    
       |
  =====================  omission
       |
     4 |
     3 |     x
     2 |     x
     1 |     x
       -------------
  </code></pre>