Problem with Sweave

On 15/05/2007 9:22 PM, Thomas Adams wrote:

I am using R 2.5 on a Linux Redhat platform. I can successfully run 
some example *.Rnw files through Sweave and generate pdf files. When 
I try my own example file, "test.Rnw":

\documentclass[a4paper]{article}
\title{Test Sweave Example}
\author{Thomas Adams}
\begin{document}
\maketitle
In this example we embed parts of the examples from the
\texttt{boxplot} and \texttt{lattice} figures into a \LaTeX{} document
<<>>=
library(verification)
library(lattice)
dat<-read.table("verification_summary_20051024_table.txt",sep="\t",header=TRUE) 

\begin{center}
<<fig=TRUE,echo=FALSE>>=
boxplot(dat$MAE ~ dat$BASINID)
abline(h=1)
abline(h=0.5,col="red")
@
\end{center}
\end{document}


I get the following error:

xt4-tir:adams> echo 'Sweave("test.Rnw")' | R --vanilla --quiet

Sweave("test.Rnw")

Writing to file test.tex
Processing code chunks ...
1 : echo term verbatim

Error: chunk 1
Error in parse(file, n, text, prompt, srcfile, encoding) :
syntax error, unexpected $undefined in:
"
"
Execution halted

I really do not know where to begin to decipher the error messages. 
Any suggestions?

You didn't end the first code chunk (no @ at the end). This isn't 
obvious from the error message, but it is obvious if you run Stangle, 
and look at the resulting R file, because you know the error is in 
chunk 1, and that last line of it doesn't look much like R code:

###################################################
### chunk number 1:
###################################################
library(verification)
library(lattice)
dat<-read.table("verification_summary_20051024_table.txt",sep="\t",header=TRUE) 

\begin{center}


###################################################
### chunk number 2:
###################################################
boxplot(dat$MAE ~ dat$BASINID)
abline(h=1)
abline(h=0.5,col="red")

Duncan Murdoch