Value of the Oja Criterion

Description

The function returns the value of the Oja criterion function for a given point.

Usage

ojaMedianFn(X, x)

Arguments

Value

a numeric value containing the ciriterion evaluated at x for the data X.

Author(s)

ported to R by Daniel Fischer. Original C++ code by Tommi Ronkainen.

References

Oja, H. (1983), Descriptive statistics for multivariate distributions, Statistics and Probability Letters, 1, 327–332.

Ronkainen, T., Oja, H. and Orponen, P. (2002), Computation of the multivariate Oja median, in Dutter R., Filzmoser P.,Gather U. and Rousseeuw, P. J.: Developments in Robust Statistics, Heidelberg: Springer, 344–359.

See Also

ojaMedian

Examples

data(biochem)
X <- as.matrix(biochem[,1:2])
x <- ojaMedian(X)
ojaMedianFn(X, x)
ojaMedianFn(X, c(1.1, 0.4))

Results

R version 3.3.1 (2016-06-21) -- "Bug in Your Hair"
Copyright (C) 2016 The R Foundation for Statistical Computing
Platform: x86_64-pc-linux-gnu (64-bit)

R is free software and comes with ABSOLUTELY NO WARRANTY.
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Type 'demo()' for some demos, 'help()' for on-line help, or
'help.start()' for an HTML browser interface to help.
Type 'q()' to quit R.

> library(OjaNP)
Loading required package: ICS
Loading required package: mvtnorm
Loading required package: ICSNP
> png(filename="/home/ddbj/snapshot/RGM3/R_CC/result/OjaNP/ojaMedianFn.Rd_%03d_medium.png", width=480, height=480)
> ### Name: ojaMedianFn
> ### Title: Value of the Oja Criterion
> ### Aliases: ojaMedianFn
> ### Keywords: multivariate nonparametric
> 
> ### ** Examples
> 
> data(biochem)
> X <- as.matrix(biochem[,1:2])
> x <- ojaMedian(X)
> ojaMedianFn(X, x)
[1] 1.5151
> ojaMedianFn(X, c(1.1, 0.4))
[1] 1.63245
> 
> 
> 
> 
> 
> dev.off()
null device 
          1 
>