https://github.com/cran/nFactors
Tip revision: 592b098fc786911733da1c1953e58c9d1c2e9517 authored by Gilles Raiche on 10 April 2010, 00:00:00 UTC
version 2.3.3
version 2.3.3
Tip revision: 592b098
plotuScree.Rd
\name{plotuScree}
\alias{plotuScree}
\title{ Plot of the Usual Cattell's Scree Test }
\description{
\code{uScree} plot a usual scree test of the eigenvalues of a correlation matrix.
}
\usage{
plotuScree(Eigenvalue,
x = Eigenvalue,
model = "components",
ylab = "Eigenvalues",
xlab = "Components",
main = "Scree Plot",
...
)
}
\arguments{
\item{Eigenvalue}{depreciated parameter: eigenvalues to analyse (not used if
x is used, recommended) }
\item{x}{ numeric: a \code{vector} of eigenvalues, a \code{matrix} of
correlations or of covariances or a \code{data.frame} of data}
\item{model}{ character: \code{"components"} or \code{"factors"} }
\item{main}{ character: title of the plot (default is \code{Scree Plot}) }
\item{xlab}{ character: label of the x axis (default is \code{Component}) }
\item{ylab}{ character: label of the y axis (default is \code{Eigenvalue}) }
\item{...}{ variable: additionnal parameters to give to the \code{eigenComputes} function}
}
\value{
Nothing returned with this function.
}
\references{
Cattell, R. B. (1966). The scree test for the number of factors.
\emph{Multivariate Behavioral Research, 1}, 245-276.
}
\seealso{
\code{\link{nScree}},
\code{\link{parallel}}
}
\author{
Gilles Raiche \cr
Centre sur les Applications des Modeles de Reponses aux Items (CAMRI) \cr
Universite du Quebec a Montreal\cr
\email{raiche.gilles@uqam.ca}, \url{http://www.er.uqam.ca/nobel/r17165/}
}
\examples{
## SCREE PLOT
data(dFactors)
attach(dFactors)
eig = Cliff1$eigenvalues
plotuScree(x=eig)
}
\keyword{ Graphics }