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\name{screePlot.covfm}
\alias{screePlot.covfm}
\title{Comparison Screeplot}
\description{
Draws overlaid screeplots for the models in a \code{covfm} object.
}
\usage{
screePlot.covfm(x, npcs, strip = "", ...)
}
\arguments{
\item{x}{a \code{"covfm"} object.}
\item{npcs}{a postive integer value specifying the number of components to be plotted.}
\item{strip}{a character string printed in the \dQuote{strip} at the top of the plot.}
\item{\dots}{additional arguments are passed to \code{xyplot}.}
}
\value{
the \code{trellis} object is invisibly returned.
}
\examples{
data(woodmod.dat)
woodm.fm <- fit.models(list(Robust = "covRob", Classical = "covClassic"),
data = woodmod.dat)
screePlot.covfm(woodm.fm, main = "Plot Title", xlab = "x-axis label",
ylab = "y-axis label", pch = 4:5)
}
\keyword{hplot}
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