title: dcast fun.aggregate parameters
body: <p>In the R package <code>reshape2</code>, does the <code>dcast()</code> function parameter fun.aggregate= have the ability to accept parameters itself?</p>
  
  <p>For instance:</p>
  
  <pre><code>dcast(dataFrame, x ~ y, value.var = 'z', fun.aggregate = mean(na.rm = TRUE))
  </code></pre>
  
  <p>I'm asking because I use my own function for the fun.aggregate parameter, and I'd rather not hard code the parameters into a growing list of functions.  </p>
  
  <p>This website is great; thanks everyone.</p>