do.ellipses function

Plot Ellipses

This function plots ellipses according to a covariance matrix

do.ellipses(acov, pos, ...)

Arguments

• acov: the given covariance matrix
• pos: the location of the ellipse
• ...: further graphical parameter for the ellipses

Returns

No return value, creates a plot.

Details

The correlation matrix of the given covariance is computed and the resulting ellipse is plotted. The radi is computed with the singular value decomposition and the cos/sin is calculated for 100 different degrees.

References

C. Reimann, P. Filzmoser, R.G. Garrett, and R. Dutter: Statistical Data Analysis Explained. Applied Environmental Statistics with R. John Wiley and Sons, Chichester, 2008.

Author(s)

Peter Filzmoser <P.Filzmoser@tuwien.ac.at > http://cstat.tuwien.ac.at/filz/

Examples

#internal function, used in CorCompare