\name{slplot}
\title{Side by side scores and loadings plot}
\usage{slplot(object, pcs=c(1,2), scoresLoadings=c(TRUE, TRUE),
sl="def", ll="def", hotelling=0.95, rug=TRUE, sub=NULL,...)}
\description{A common way of visualizing two principal components}
\details{This method is meant to be used as a quick way to visualize
results, if you want a more specific plot you probably want to
get the scores, loadings with \code{scores(object)},
\code{loadings(object)} and then design your own plotting method.}
\value{None, used for side effect.}
\note{Uses layout instead of par to provide side-by-side so it
works with Sweave (but can not be combined with
\code{par(mfrow=..))}}
\author{Henning Redestig}
\seealso{\code{\link{pca}}, \code{\link{biplot}}}
\alias{slplot}
\alias{slplot,pcaRes-method}
\keyword{multivariate}
\arguments{\item{object}{a pcaRes object}
\item{pcs}{which two pcs to plot}
\item{scoresLoadings}{Which should be shown scores and or loadings}
\item{sl}{labels to plot in the scores plot}
\item{ll}{labels to plot in the loadings plot}
\item{hotelling}{confidence interval for ellipse in the score plot}
\item{rug}{logical, rug x axis in score plot or not}
\item{sub}{Subtitle, defaults to annotate with amount of explained
variance.}
\item{...}{Further arguments to plot functions. Prefix arguments
to \code{par()} with 's' for the scores plot and 'l' for the
loadings plot. I.e. cex become scex for setting character
expansion in the score plot and lcex for the loadings plot.}}
\examples{data(iris)
pcIr <- pca(iris[,1:4], scale="uv")
slplot(pcIr, sl=NULL, spch=5)
slplot(pcIr, sl=NULL, lcex=1.3, scol=as.integer(iris[,5]))}