I think I have solved the problem. In the Sweave manual it mentions that
problems may occur after loading the R2HTML package. I have not
recently loaded this package but the proposed solution to problems
caused by R2HTML also solves my problem with the evaluation of R code in
\Sexpr. It seems that it is necessary to set the syntax option in the
Sweave function as follows
Sweave(..., syntax="SweaveSyntaxNoweb")
although I am not sure why this is required.
Mike
On 19:59, Mike White wrote:
I am trying to run the Sweave example at
http://www.stat.uni-muenchen.de/~leisch/Sweave/Sweave-Rnews-2002-3.pdf
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).
Thanks
Mike White
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