Query Number of Draws — n_draw • rvec

Get a count of the random draws held by x. If x does not hold random draws, then n_draw() throws an error.

Usage

n_draw(x)

# Default S3 method
n_draw(x)

# S3 method for class 'rvec'
n_draw(x)

Arguments

x: An object that holds random draws, eg an rvec.

Value

A positive integer scalar. An rvec always has at least one draw, including when it has zero elements.

See also

extract_draws() to select draws using indices.
thin_draws() to randomly reduce the number of draws.
is_rvec() to test if an object is an rvec.

Examples

m <- matrix(1:40, nrow = 4, ncol = 10)
x <- rvec(m)
n_draw(x)
#> [1] 10