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Last data update: 2014.03.03

R: Random Treatment Assignments for Randomized Block Designs

blockRand

R Documentation

Random Treatment Assignments for Randomized Block Designs

Description

Randomly draws a specified number of assignment vectors or matrices according to a randomized block design.

Usage

blockRand(w, nrand, block)

Arguments

`w`	a vector or matrix of assignments.
`nrand`	a number specifying the desired number of random assignments.
`block`	a vector of block designations.

Details

Assignments are randomly permuted within each block.

If w is a matrix, the permutations occur by row.

Value

A list of random assignment vectors or matrices.

Author(s)

Joseph J. Lee and Tirthankar Dasgupta

Examples

w1 = c(0,1,0,1,0,1,0,1)
block = c(0,0,0,0,1,1,1,1)
blockRand(w1, nrand = 5, block)

w2 = c(0,0,1,1,0,0,1,1)
blockRand(w = cbind(w1,w2), nrand = 5, block)