Fourth: Fourth: matrices of fourth moments or fourth cumulants
In Kurt: Performs Kurtosis-Based Statistical Analyses

Description Usage Arguments Value Author(s) Examples

View source: R/Fourth.R

Returns a matrix containing either the fourth moments or the fourth cumulants. It recalls the functions Fourth4 and Cum4.

1	Fourth(data, type, shape, feature)

`data`	data matrix
`type`	type =0 is the ordinary fourth moment / cumulant; type =1 is the centered fourth moment / cumulant; type =2 is the standardized fourth moment / cumulant
`shape`	"square" or "rectangular"
`feature`	"moment" or "cumulant". If feature is "moment", the function computes the fourth moment of a data matrix. The function recalls the function Fourth4. If feature is "cumulant", the function computes the fourth multivariate cumulant. The function recalls the function Cum4.

`M`	Fourth square moment matrix
`MM`	Fourth rectangular moment matrix
`K4`	Fourth cumulants of the given data

Cinzia Franceschini and Nicola Loperfido

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data(iris)
iris<-data.matrix(iris)#returns the matrix obtained by converting the data frame to numeric mode
Fourth(iris[,1:4], 1,"square", "moment")#returns a matrix containing the fourth moments