plot.ellipse function

Plot a concentration ellipse.

Plot a concentration ellipse obtained from ConcEllipse.

## S3 method for class 'ellipse'
plot(x, add=TRUE, labeled= FALSE , 
center=FALSE, centerlabel="Center", initial=FALSE,  ...)

Arguments

• x: An object with class ellipse obtained from ConcEllipse.
• add: Should the ellipse be added to the current plot?
• labeled: Should the ellipse be labelled with the confidence level?
• center: Should the center be plotted?
• centerlabel: Label for the center.
• initial: Should the initial data be plotted?
• ...: Any other graphical parameter that can affects the plot (as color, etc ...)

Details

Plots an ellipse containing a specified percentage of the data.

Returns

No value returned

References

Meulman, J. J., & Heiser, W. J. (1983). The display of bootstrap solutions in multidimensional scaling. Murray Hill, NJ: Bell Laboratories.

Linting, M., Meulman, J. J., Groenen, P. J., & Van der Kooij, A. J. (2007). Stability of nonlinear principal components analysis: An empirical study using the balanced bootstrap. Psychological Methods, 12(3), 359.

Author(s)

Jose Luis Vicente Villardon

See Also

ConcEllipse, ~~~

Examples

data(iris)
dat=as.matrix(iris[1:50,1:2])
plot(iris[,1], iris[,2],col=iris[,5], asp=1)
E=ConcEllipse(dat, 0.95)
plot(E, labeled=TRUE, center=TRUE)