depthTukey: Tukey Depth

Description Usage Arguments Details Author(s) Examples

View source: R/depth.R

Description

Computes the Tukey depth of a point or vectors of points with respect to a multivariate data set.

Usage

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depthTukey(u, X, ndir = 1000, name = "X", threads = -1, exact = FALSE,
  ...)

Arguments

u

Numerical vector or matrix whose depth is to be calculated. Dimension has to be the same as that of the observations.

X

The data as a matrix, data frame or list. If it is a matrix or data frame, then each row is viewed as one multivariate observation. If it is a list, all components must be numerical vectors of equal length (coordinates of observations).

ndir

number of directions used in computations

name

name for this data set - it will be used on plots from depthproc.

threads

number of threads used in parallel computations. Default value -1 means that all possible cores will be used.

exact

if TRUE exact alhorithm will be used . Currently it works only for 2 dimensional data set.

...

currently not supported.

Details

Irrespective of dimension, Projection and Tukey's depth is obtained by approximate calculation.

Returns the depth of multivariate point u with respect to data set X.

Author(s)

Daniel Kosiorowski, Mateusz Bocian, Anna Wegrzynkiewicz and Zygmunt Zawadzki from Cracow University of Economics.

Examples

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## Not run: 
 x = matrix(rnorm(3000), nc = 3)
 depthTukey(x, ndir = 2000)
 
## End(Not run)

 # Exact algorithm in 2d
 x = matrix(rnorm(2000), nc = 2)
 depthTukey(x, exact = TRUE)

DepthProc documentation built on May 31, 2017, 4:49 a.m.