dot-computeEllipses: Compute Confidence Ellipses

In ChemoSpecUtils: Functions Supporting Packages ChemoSpec and ChemoSpec2D

Compute Confidence Ellipses

Description

Internal function. A utility function which when given a x,y data set computes both classical and robust confidence ellipses.

Usage

.computeEllipses(x, quan = 1/2, alpha = 0.025)

Arguments

x	As per corr.plot.
quan	As per corr.plot.
alpha	As per corr.plot.

Value

A list with the following elements (a simpler version of that in the original function corr.plot):

x.cls	The x values for the classical ellipse.
y.cls	The y values for the classical ellipse.
c	The correlation value for the classical ellipse.
x.rob	The x values for the robust ellipse.
y.rob	The y values for the robust ellipse.
r	The correlation value for the robust ellipse.

Author(s)

Bryan A. Hanson (DePauw University).

See Also

See function corr.plot in package mvoutlier on which this function is based.

ChemoSpecUtils documentation built on May 29, 2024, 3:12 a.m.