obtain_permutation_matrix: Obtain Permutation Matrix from a Random Assignment...

In randomizr: Easy-to-Use Tools for Common Forms of Random Assignment and Sampling

Obtain Permutation Matrix from a Random Assignment Declaration

Description

Obtain Permutation Matrix from a Random Assignment Declaration

Usage

obtain_permutation_matrix(declaration, maximum_permutations = 10000)

Arguments

declaration	A random assignment declaration, created by declare_ra.
maximum_permutations	If the number of possible random assignments exceeds maximum_permutations, obtain_permutation_matrix will return a random sample of maximum_permutations permutations. Defaults to 10,000.

Value

a matrix of all possible (or a random sample of all possible) random assignments consistent with a declaration.

Examples

# complete

declaration <- declare_ra(N = 4)
perms <- obtain_permutation_matrix(declaration)
dim(perms)
obtain_num_permutations(declaration)

# blocked

blocks <- c("A", "A", "B", "B", "C", "C", "C")
declaration <- declare_ra(blocks = blocks)
perms <- obtain_permutation_matrix(declaration)
dim(perms)
obtain_num_permutations(declaration)

# clustered

clusters <- c("A", "B", "A", "B", "C", "C", "C")
declaration <- declare_ra(clusters = clusters)
perms <- obtain_permutation_matrix(declaration)
dim(perms)
obtain_num_permutations(declaration)

# large

declaration <- declare_ra(20)
choose(20, 10)
perms <- obtain_permutation_matrix(declaration)
dim(perms)

randomizr documentation built on Aug. 10, 2023, 9:07 a.m.