poisson: The Poisson Distribution

In gmatrix: GPU Computing in R

Description

Density and random generation for the Poisson distribution with parameter lambda.

Usage

gdpois(x, lambda, log = FALSE, type = "d")
grpois(n, lambda)

Arguments

x	vector of (non-negative integer) quantiles
n	number of random values to return
lambda	vector of (non-negative) means
log	logical; if TRUE, probabilities p are given as log(p)
type	specify the type; may be "double", "single" (or short form "d" or "s")

Details

Very similar to the R stats functionality.

Value

gdpois gives the (log) density, and grpois generates random deviates.

Note

The algorithm for simulating from the poisson distribution was modified from the GSL library which uses the Knuth method.

Author(s)

Nathan Morris

See Also

dpois

Examples

myRndNums = grpois(10,4)

gmatrix documentation built on May 29, 2017, 2:20 p.m.