R: Compute Confidence Ellipses

plotScoresCor {ChemoSpec} | R Documentation

## Compute Confidence Ellipses

### Description

A utility function which when given a x,y data set computes both classical and robust confidence ellipses. An internal function, not generally called by the user.

### Usage

    plotScoresCor(x, quan = 1/2, alpha = 0.025)

### Arguments

`x` | As per `cor.plot`.
`quan` | As per `cor.plot`.
`alpha` | As per `cor.plot`.

### Value

A list with the following elements (a simpler version of that in the original function `cor.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. Derived from `cor.plot`.

### References

https://github.com/bryanhanson/ChemoSpec

### See Also

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

[Package ChemoSpec version 4.4.97 Index]