[R] Sweave & xtable

[michaell taylor]

I am just starting to learn Sweave (really neat tool).  I am pretty
early in the learning curve (I had to think a moment ago whether a # or
% was the appropriate comment character).

I have successfully incorporated simple graphics and outputs, but am
having trouble getting a latex (xtable) table to function properly. 
Latex is seemingly treating the xtable code as input or verbatim text. 
That is, if I run Sweave('myfile.Snw', echo=T) I get the latex syntax
xtable code handed to me twice in the myfile.dvi.  Turning echo off, I
get the xtable code (not the nicely formated latex table) back in the
dvi.

There seems nothing wrong with the myfile.tex file itself.  (I attach a
snip below).  Everything run fine if I manually edit the myfile.tex file
and delete the :

\begin{Schunk}
\begin{Soutput} 

and,

\end{Soutput}
\end{Schunk}

commands.  Dropping these, I get the properly formated latex table in
the dvi.  

I see that others have used xtable, so I assume Sweave.sty handle xtable
ok.

What am I missing?

code and output chunks follow....

===snip=====
n<- xtable(final[,1:3])
@
\begin{tiny}
<< trial>>=
print(n)
@
\end{tiny}
\end{document}
===snip===

which produces

===snip===

\begin{tiny}
\begin{Schunk}
\begin{Soutput}
% latex table generated in R 1.8.1 by xtable 1.2-2 package
% Thu Jan  8 16:03:23 2004
\begin{table}[ht]
\begin{center}
\begin{tabular}{rrrr}
\hline
 & shares & invested.sums & weighted.price \\
\hline
JBLU & 5.78 & 260.00 & 44.68 \\
IYR & 25.12 & 2395.00 & 94.48 \\
WM & 41.09 & 1565.00 & 38.00 \\
SPY & 37.27 & 3840.00 & 102.84 \\
IBM & 25.24 & 2130.00 & 83.45 \\
EWM & 177.20 & 1059.00 & 5.88 \\
KO & 25.61 & 1130.00 & 43.44 \\
EWJ & 230.00 & 1924.00 & 8.32 \\
DIA & 48.36 & 4295.00 & 89.06 \\
EWH & 123.16 & 1095.00 & 8.79 \\
QQQ & 98.12 & 2991.00 & 31.22 \\
IWZ & 78.03 & 2475.00 & 31.70 \\
IVE & 47.44 & 2158.00 & 45.36 \\
EWW & 73.39 & 1079.00 & 14.50 \\
IBB & 24.28 & 1390.00 & 58.28 \\
EWG & 67.07 & 879.00 & 12.93 \\
C & 62.81 & 2015.00 & 33.17 \\
TYC & 80.61 & 1325.00 & 16.80 \\
RHAT & 223.92 & 1425.00 & 6.89 \\
\hline
\end{tabular}
\end{center}
\end{table}
\end{Soutput}
\end{Schunk}
\end{tiny}
===snip===

Michaell