[R] Problem with Sweave not recognising \Sexpr{}

Mike White mikewhite.diu at btconnect.com
Tue May 25 11:25:36 CEST 2010

I am trying to run the Sweave example at 
However, the \Sexpr{} code is not being evaluated, although the actual R 
code within the {} runs ok in R.
Below is part of the resulting .tex file.  Can anyone help identify the 
cause? I am using R 2.10.1 on Windows XP.

Consider the \texttt{cats} regression example from Venables \& Ripley
(1997). The data frame contains measurements of heart and body weight
of \Sexpr{nrow(cats)} cats (\Sexpr{sum(cats$Sex=="F")} female,
\Sexpr{sum(cats$Sex=="M")} male).

Mike White

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