I am trying to build the notation for combination as the function

\code{choose} in a *.Rd file; but it is not working.

To reduce to essence

\deqn{ \left( \begin{array}{c}

r-1 \\

n

\end{array} \right)

}

I have double checked the latex logic (without \deqn{}) in LaTexIT on

MacOSX so it seems fine.

I've read the R-ext.pdf and down some searching in the

archives--stumped.

R CMD Rd2dvi --pdf

renders something like this

( r-1\n )

Advice?

Thanks.

Wil

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