rGammaBinom {betafunctions}

Random number generation under the Gamma-extended Binomial distribution.

Description

Random number generation under the Gamma-extended Binomial distribution.

Usage

rGammaBinom(n, size, prob, precision = 1e-04)

Arguments

n

Number of observations.

size

Number of "trials" (zero or more). Need not be integer.

prob

Probability of "success" on each "trial". Need not be integer.

precision

The precision with which the quantile is to be calculated. Default is 1e-4 (i.e., search terminates when there is no registered change in estimate at the fourth decimal). Tuning this value will impact the time it takes for the search algorithm to arrive at an estimate.

Note

Calls qGammaBinom(), which makes the random draw slower than what one might be used to (since qGammaBinom() calls pGammaBinom() and employs a search-algorithm to find the appropriate value down to a specifiable level of precision).

Examples

# Assume some variable follows a Gamma-Binomial distribution with
# "number of trials" = 10.5 and probability of "success" for each "trial"
# = 0.75 To draw a random value from this distribution:
rGammaBinom(n = 1, size = 10, prob = 0.75)