title: How use pcode to regenerate a file in MatLab?
body: <p>When I run a .m file containing a .p datafile I get the following error message: </p>
  
  <blockquote>
  <pre><code>The P-code file /Users/....
  was generated prior to MATLAB version 7.5 (R2007b) and is no longer supported.  Use pcode
  to regenerate the file using MATLAB R2007b or later.
  </code></pre>
  </blockquote>
  
  <p>How should I use pcode to regenerate the file as suggested by the hint?</p>
  
  <p>I try to type <code>pcode filename</code> and <code>pcode(filename)</code> but without any success. Any suggestions? Also I should mention that the .m does not work because of this problem so I cannot simply ignore the warning. </p>