nFactors (version 2.4.1.1)

plotuScree: Plot of the Usual Cattell's Scree Test

Description

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",
  ...)

Value

Nothing returned with this function.

Arguments

Eigenvalue

depreciated parameter: eigenvalues to analyse (not used if x is used, recommended)

x

numeric: a vector of eigenvalues, a matrix of correlations or of covariances or a data.frame of data

model

character: "components" or "factors"

ylab

character: label of the y axis (default is Eigenvalue)

xlab

character: label of the x axis (default is Component)

main

character: title of the plot (default is Scree Plot)

...

variable: additionnal parameters to give to the eigenComputes function

Author

Gilles Raiche
Centre sur les Applications des Modeles de Reponses aux Items (CAMRI)
Universite du Quebec a Montreal

References

Cattell, R. B. (1966). The scree test for the number of factors. Multivariate Behavioral Research, 1, 245-276.

See Also

nScree, parallel

Examples

## SCREE PLOT
 data(dFactors)
 attach(dFactors)
 eig = Cliff1$eigenvalues
 plotuScree(x=eig)