\HeaderA{vp\_path}{Viewport path}{vp.Rul.path}
\keyword{hplot}{vp\_path}
\keyword{internal}{vp\_path}
\begin{Description}\relax
Calculate viewport path.
\end{Description}
\begin{Usage}
\begin{verbatim}vp_path(row, col, type)\end{verbatim}
\end{Usage}
\begin{Arguments}
\begin{ldescription}
\item[\code{row}] row index
\item[\code{col}] column index
\item[\code{type}] viewport type
\end{ldescription}
\end{Arguments}
\begin{Details}\relax
Convience method for calculating the viewport path to a particular
entry in a matrix viewport.  This helps ensure a common naming scheme throughout
ggplot/
\end{Details}
\begin{Author}\relax
Hadley Wickham <h.wickham@gmail.com>
\end{Author}
\begin{Examples}
\begin{ExampleCode}\end{ExampleCode}
\end{Examples}

