title: F# - How to show RProvider results in FSI?
body: <p>I am working on samples scripts on how to use RProvider:
  <a href="http://bluemountaincapital.github.io/Deedle/rinterop.html" rel="nofollow noreferrer">http://bluemountaincapital.github.io/Deedle/rinterop.html</a></p>
  
  <p>However, I never get in FSI the result as they get in the example page. I would just get:</p>
  
  <pre><code>val it : SymbolicExpression =
     RDotNet.SymbolicExpression {Engine = RDotNet.REngine;
                            IsClosed = false;
                            IsInvalid = false;
                            IsProtected = true;
                            Type = NumericVector;}
  </code></pre>
  
  <p>When in the sample code, they get, for R.colMeans(...)</p>
  
  <pre><code>val it : SymbolicExpression =
   Ozone  Solar.R  Wind  Temp  Month   Day 
   NaN      NaN  9.96 77.88   6.99  15.8
  </code></pre>
  
  <p>I am pretty sure that the data frame (Deedle) that I pass to R using R.as_data_frame(...) is not empty. In a way it seems that the code isn't executed.</p>
  
  <p>Any idea? Thank you</p>