\Header{Grid}{Grid Graphics}
\keyword{dplot}{Grid}
\begin{Description}\relax
General information about the grid graphics package.
\end{Description}
\begin{Details}\relax
Grid graphics provides an alternative to the standard R graphics.
The user is able to define arbitrary rectangular regions (called
\emph{viewports}) on the graphics device and define a number of
coordinate systems for each region.  Drawing can be specified to occur
in any viewport using any of the available coordinate systems.

Grid graphics and standard R graphics do not mix!

Type \code{library(help = grid)} to see a list of (public)
Grid graphics functions.
\end{Details}
\begin{Author}\relax
Paul Murrell
\end{Author}
\begin{SeeAlso}\relax
\code{\Link{viewport}},
\code{\Link{grid.layout}}, and
\code{\Link{unit}}.
\end{SeeAlso}
\begin{Examples}
\begin{ExampleCode}
## Diagram of a simple layout 
grid.show.layout(grid.layout(4,2,
                     heights=unit(rep(1, 4),
                                  c("lines", "lines", "lines", "null")),
                     widths=unit(c(1, 1), "inches")))
## Diagram of a sample viewport
grid.show.viewport(viewport(x=0.6, y=0.6,
                            w=unit(1, "inches"), h=unit(1, "inches")))
## A flash plotting example
grid.multipanel(vp=viewport(0.5, 0.5, 0.8, 0.8))
\end{ExampleCode}
\end{Examples}

