[R] how to use \Sexpr{} with sweave

[Friedrich Schuster]

Hi,
 this works for me (R 2.5.1, Linux): 

<<echo=false>>=
data(airquality)
library(ctest)
kruskal.test(Ozone ~ Month, data = airquality)
@
Wir haben hier also \Sexpr{nrow(airquality)} Datenzeilen in airquality.
This works
\Sexpr{2+6}

I think the error is in your latex setup, not in R or Sweave.   


ryancw wrote:
> 
> I'm trying to learn Sweave.  So far things are going well with the chunks
> of code identified by << >>=
> 
> But I'm having trouble with the in-line text use of \Sexpr.
> 
> Here is a short example .Rnw file:
> 
> \documentclass[12pt]{article}
> \usepackage[margin=1.25in]{geometry}
> \usepackage{graphicx}
> \usepackage{Sweave}
> 
> \begin{document}
> 
> <<test>>=
> pnorm(1)
> @
> 
> 
> \Sexpr{2+6}
> 
> \end{document}
> 
> The .tex file that it yields contains 
> 
> \Sexpr{2+6} as its next-to-last line.  \usepackage{Sweave} is in its
> preamble.
> 
> When I pdflatex that file, the resulting pdf file shows the proper value
> of pnorm(1), but it does not contain "8" near its end.  Instead it
> contains "2+6".  I had expected the computed value.
> 
> Also, pdflatex gives me a message that "there was an error opening the
> document.  The file cannot be found." I have to go find it and open it,
> instead of it opening automatically like a non-problematic case would.
> 
> Running R 2.5.1 on WinXP, with MikTex.
> 
> Any advice? Thanks.
> 
> --Chris Ryan
> 
> ______________________________________________
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> PLEASE do read the posting guide
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> and provide commented, minimal, self-contained, reproducible code.
> 
> 

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