Compositional: rdiri – R documentation

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rdiri

Dirichlet random values simulation

Dirichlet random values simulation.

rdiri(n, a)

`n`	The sample size, a numerical value.
`a`	A numerical vector with the parameter values.

The algorithm is straightforward, for each vector, independent gamma values are generated and then divided by their total sum.

A matrix with the simulated data.

Michail Tsagris

R implementation and documentation: Michail Tsagris mtsagris@uoc.gr and Giorgos Athineou <gioathineou@gmail.com>

Ng Kai Wang, Guo-Liang Tian and Man-Lai Tang (2011). Dirichlet and related distributions: Theory, methods and applications. John Wiley \& Sons.

Aitchison J. (1986). The statistical analysis of compositional data. Chapman \& Hall.

x <- rdiri( 100, c(5, 7, 1, 3, 10, 2, 4) )
diri.est(x)

Compositional Data Analysis

v4.6

GPL (>= 2)

Authors

Michail Tsagris [aut, cre], Giorgos Athineou [aut], Abdulaziz Alenazi [ctb]

Initial release

2021-04-27