R: Simulate count compositions without overdispersion

rpois {compositions} | R Documentation

## Simulate count compositions without overdispersion

### Description

Generates multinomial or multi-Poission random variates based on an Aitchison composition.

### Usage

    rpois.ccomp(n,p,lambda)
    rmultinom.ccomp(n,p,N)

### Arguments

`n` | number of datasets to be simulated
`p` | The composition representing the probabilites/portions of the individual parts
`lambda` | scalar or vector giving the expected total count
`N` | scalar or vector giving the total count

### Details

A count composition is a realisation of a multinomial or multivariate Poisson distribution.

### Value

a random dataset ccount dataset

### Author(s)

K.Gerald v.d. Boogaart http://www.stat.boogaart.de

### See Also

`rnorm.ccomp`

### Examples

    p <- acomp(c(3,3,3))
    rpois.ccomp(10,p,40)
    rmultinom.ccomp(10,p,40)

[Package compositions version 2.0-2 Index]