#' Beta random vectors
#'
#' Generate and do operations on Beta random vectors
#'
#' @param a Number of successes \eqn{\alpha}
#' @param b Number of failures \eqn{\beta}
#' @return A Beta random vector
#'
#' @examples
#' x <- beta(1:10, 10:1)
#' x
#' mean(x)
#' draw(x)
#'
#' @export
beta <- function(a, b) {
rv <- complex(real = a / (a + b), imaginary = a + b)
class(rv) <- c("beta", "random")
rv
}
#' @export
print.beta <- function(x, ...) {
rv <- paste0("B(", Re(x) * Im(x), ", ", Im(x) - Re(x) * Im(x), ")")
print.default(rv, quote = FALSE)
invisible(x)
}
#' @export
mean.beta <- function(x, ...) {
as.double(Re(x))
}
#' @importFrom stats rbeta
#' @export
draw.beta <- function(rv) {
dr <- as.double(Re(rv))
dr[!is.infinite(Im(rv))] <-
rbeta(length(rv), Re(rv) * Im(rv), Im(rv) - Re(rv) * Im(rv))
dr
}
Add the following code to your website.
For more information on customizing the embed code, read Embedding Snippets.