rv (version 0.949)

rvdiscrete: Generate Random Vectors from a Discrete Sampling Model

Description

Generates random variables from a discrete distribution.

Usage

rvdiscrete(n=1, x, prob=NULL)

Arguments

n

integer: number of scalars to generate

x

values of the distribution

prob

probabilities (optional, default: all equal)

Details

Computes a random vector of length n, consisting of identicallly distributed discrete random scalars with the discrete distribution with values x and corresponding probabilities prob. If prob is not given, all values are considered equally distributed.

References

Kerman, Jouni and Gelman, Andrew. Manipulating and Summarizing Posterior Simulations Using Random Variable Objects. Technical report, Columbia University, New York.

Examples

# 8 people draw a number each from 1..10 with replacement.
  # What is the probability that the highest number of the eight is "10"?
  u <- rvdiscrete(n=8, x=1:10) # 8 iid variables from the discrete uniform 1:10.
  s <- sort(u) # order distribution
  Pr(s[8]==10)