permuteinstrata {pps}

Randomize units within strata

Description

Randomize the order of units within each stratum

Usage

permuteinstrata(stratsizes)

Arguments

stratsizes

A vector containing the size of each stratum

Value

Returns the vector of permuted indices. In the example below, the returned vector has 29 elements.

Note

See the user's guide, pps-ug.pdf, for more information.

Examples

stratsizes <- c(9,10,10)  # strata have 9, 10 and 10 units, respectively
permuteinstrata(stratsizes)