\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 }