R: Elliptical and Spherical Depth

depth {mixtools} | R Documentation

## Elliptical and Spherical Depth

### Description

Computation of spherical or elliptical depth.

### Usage

     depth(pts, x, Cx = var(x))

### Arguments

`pts` | A kxd matrix containing the k points that one wants to compute the depth. Each row is a point.
`x` | A nxd matrix containing the reference data. Each row is an observation.
`Cx` | A dxd scatter matrix for the data x where the default is var(x). When Cx = I(d), it returns the sphercial depth.

### Value

`depth` returns a k-vector where each entry is the elliptical depth of a point in `pts`.

### Note

`depth` is used in `regcr`.

### References

Elmore, R. T., Hettmansperger, T. P. and Xuan, F. (2000) Spherical Data Depth and a Multivariate Median, Proceedings of Data Depth: Robust Multivariate Statistical Analysis, Computational Geometry and Applications.

### See Also

`regcr`

### Examples

      set.seed(100)
      x <- matrix(rnorm(200),nc = 2)
      depth(x[1:3, ], x)

[Package mixtools version 1.2.0 Index]