\HeaderA{grid.rect}{Draw rectangles}{grid.rect}
\aliasA{rectGrob}{grid.rect}{rectGrob}
\keyword{dplot}{grid.rect}
\begin{Description}\relax
These functions create and draw rectangles.
\end{Description}
\begin{Usage}
\begin{verbatim}
grid.rect(x = unit(0.5, "npc"), y = unit(0.5, "npc"),
          width = unit(1, "npc"), height = unit(1, "npc"),
          just = "centre", hjust = NULL, vjust = NULL,
          default.units = "npc", name = NULL,
          gp=gpar(), draw = TRUE, vp = NULL)
rectGrob(x = unit(0.5, "npc"), y = unit(0.5, "npc"),
         width = unit(1, "npc"), height = unit(1, "npc"),
         just = "centre", hjust = NULL, vjust = NULL, 
         default.units = "npc", name = NULL,
         gp=gpar(), vp = NULL)
\end{verbatim}
\end{Usage}
\begin{Arguments}
\begin{ldescription}
\item[\code{x}] A numeric vector or unit object specifying x-location.
\item[\code{y}] A numeric vector or unit object specifying y-location.
\item[\code{width}] A numeric vector or unit object specifying width.
\item[\code{height}] A numeric vector or unit object specifying height.
\item[\code{just}] The justification of the rectangle 
relative to its (x, y) location.  If there are two values, the first
value specifies horizontal justification and the second value specifies
vertical justification.  Possible string values are: \code{"left"},
\code{"right"}, \code{"centre"}, \code{"center"}, \code{"bottom"},
and \code{"top"}.  For numeric values, 0 means left alignment
and 1 means right alignment.

\item[\code{hjust}] A numeric vector specifying horizontal justification.
If specified, overrides the \code{just} setting.
\item[\code{vjust}] A numeric vector specifying vertical justification.
If specified, overrides the \code{just} setting.
\item[\code{default.units}] A string indicating the default units to use
if \code{x}, \code{y}, \code{width}, or \code{height}
are only given as numeric vectors.
\item[\code{name}] A character identifier. 
\item[\code{gp}] An object of class \code{gpar}, typically the output
from a call to the function \code{gpar}.  This is basically
a list of graphical parameter settings.
\item[\code{draw}] A logical value indicating whether graphics output
should be produced.
\item[\code{vp}] A Grid viewport object (or NULL).
\end{ldescription}
\end{Arguments}
\begin{Details}\relax
Both functions create a rect grob (a graphical object describing
rectangles), but only \code{grid.rect}
draws the rectangles (and then only if \code{draw} is \code{TRUE}).
\end{Details}
\begin{Value}
A rect grob.  \code{grid.rect} returns the value invisibly.
\end{Value}
\begin{Author}\relax
Paul Murrell
\end{Author}
\begin{SeeAlso}\relax
\LinkA{Grid}{Grid},
\code{\LinkA{viewport}{viewport}}
\end{SeeAlso}

