On 7/14/2008 2:39 PM, Stephan Kolassa wrote:
Phil:
thanks a lot! However, my original problem[1] remains: in fact, I am
trying to \Sexpr the result for Sweave, and for some reason Sweave
regurgitates the \Sexpr command unchanged:
foo.Rnw contains:
\Sexpr{"DV~IV"}
\Sexpr{cat("DV~IV")}
\Sexpr{sub('~','$\\\\sim$',"DV~IV")}
\Sexpr{cat(sub('~','$\\\\sim$',"DV~IV"),"\n")}
The \Sexpr{} form is limited in what it can handle; it's probably
getting confused by all those escapes. Here's a way to do it that works
for me:
<<>>=
Fixtilde <- function(x) sub('~','$\\\\\\\\sim$',x)
@
Here it is: \Sexpr{Fixtilde("DV~IV")}.
I haven't traced through the code to see why I need 8 escapes so that
one makes it through to the .tex file, but that's what appears to work.
Duncan Murdoch
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