rdirichlet: Dirichlet distribution

In KlausVigo/phangornMCMC: phangorn MCMC

Description

Density and random generation for the Dirichlet distribution with mean equal to mean and standard deviation equal to sd.

Usage

rdirichlet(n, alpha)

rdirichlet1(alpha)

ddirichlet(x, alpha)

Arguments

n	Number of random vectors to generate.
alpha	Vector or (for ddirichlet) matrix containing shape parameters.
x	A vector containing a single random deviate or matrix containg one random deviate per row.

Details

The Dirichlet is the multidimensional of the bet distribution and the canonical Bayesian Distribution for the parameters of a multinomial distribution. rdirichlet1(alpha) is a shortcut for rdirichlet(1, alpha)

Author(s)

Code original posted by Ben Bolker to R-News on Fri Dec 15 2000. See https://stat.ethz.ch/pipermail/r-help/2000-December/009561.html. Ben attributed the code to Ian Wilson [e-mail]. Subsequent modifications by Gregory R. Warnes [e-mail].

See Also

dbeta, rbeta

Examples

set.seed(42)
rdirichlet(5, c(1,1,1) )
set.seed(42)
rdirichlet1(c(1,1,1))

KlausVigo/phangornMCMC documentation built on May 23, 2019, 4:23 p.m.