dlnorm_rvec: Log-Normal Distribution, Using Multiple Draws

Description

Density, distribution function, quantile function and random generation for the log-normal distribution, modified to work with rvecs.

Usage

dlnorm_rvec(x, meanlog = 0, sdlog = 1, log = FALSE)
plnorm_rvec(q, meanlog = 0, sdlog = 1, lower.tail = TRUE, log.p = FALSE)
qlnorm_rvec(p, meanlog = 0, sdlog = 1, lower.tail = TRUE, log.p = FALSE)
rlnorm_rvec(n, meanlog = 0, sdlog = 1, n_draw = NULL)

Value

If any of the arguments are rvecs, or if a value for n_draw is supplied, then an rvec; otherwise an ordinary R vector.

Arguments

x: Quantiles. Can be an rvec.
meanlog: Mean of distribution, on log scale. Default is 0. See dlnorm(). Can be an rvec.
sdlog: Standard deviation of distribution, on log scale. Default is 1. See dlnorm(). Can be an rvec.
log, log.p: Whether to return results on a log scale. Default is FALSE. Cannot be an rvec.
q: Quantiles. Can be an rvec.
lower.tail: Whether to return \(P[X \le x]\), as opposed to \(P[X > x]\). Default is TRUE. Cannot be an rvec.
p: Probabilities. Can be an rvec.
n: The length of random vector being created. Cannot be an rvec.
n_draw: Number of random draws in the random vector being created. Cannot be an rvec.

Details

Functions dlnorm_rvec(), plnorm_rvec(), plnorm_rvec() and rlnorm_rvec() work like base R functions dlnorm(), plnorm(), qlnorm(), and rlnorm(), except that they accept rvecs as inputs. If any input is an rvec, then the output will be too. Function rlnorm_rvec() also returns an rvec if a value for n_draw is supplied.

dlnorm_rvec(), plnorm_rvec(), plnorm_rvec() and rlnorm_rvec() use tidyverse vector recycling rules:

Vectors of length 1 are recycled
All other vectors must have the same size

Examples

Run this code

x <- rvec(list(c(3.1, 5.7),
               c(0.2, 2.3)))
dlnorm_rvec(x)
plnorm_rvec(x)

rlnorm_rvec(n = 2,
            meanlog = c(1, 3),
            n_draw = 1000)

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