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#' Generate Random Vectors from a Poisson Sampling Model
#'
#' Generates random variables from a Poisson sampling model.
#'
#'
#' @param n integer: number of variables to generate
#' @param lambda a vector of (positive) mean parameters; (may be random)
#' @note If any of the arguments are random, the resulting simulations may have
#' non-Poisson marginal distributions.
#' @author Jouni Kerman \email{jouni@@kerman.com}
#' @references Kerman, J. and Gelman, A. (2007). Manipulating and Summarizing
#' Posterior Simulations Using Random Variable Objects. Statistics and
#' Computing 17:3, 235-244.
#'
#' See also \code{vignette("rv")}.
#' @keywords classes
#' @examples
#'
#' x <- rvpois(lambda=10) # A Poisson rv with mean 10
#' lbd <- rvchisq(1,1) # Some positive rv
#' y <- rvpois(lambda=lbd) # Not a Poisson rv, although each simulation is a draw from Poisson.
#'
#' @export rvpois
#' @importFrom stats rpois
rvpois <- function (n = 1, lambda) {
rvvapply(rpois, n. = n, lambda = lambda)
}
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