title: Matlab surf plot remove offset (nonzero)
body: <p>I have some data which I am plotting using the surf command.
  Its pretty simple, </p>
  
  <p><code>data=xlsread('./sample_55_data.xlsx');
   surf(data,'EdgeColor','none');</code></p>
  
  <p>However, it produces a plot which is offset in some dimensions from zero.
  I can't figure out how to remove this.</p>