stratsrs {pps}

Stratified simple random sampling

Description

In each stratum, select a simple random sample

Usage

stratsrs(stratum,nh)

Arguments

stratum

A vector of stratum codes, sorted by stratum

nh

A vector containing the sample size in each stratum

Value

Returns the indices of the units that were selected in the sample

Note

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

Examples

strat <- c(1,1,1,1,1,2,2,2,3,3,3,3,3,3,3)  # stratum 1 has 5 units, etc. 
nh <- c(2,1,3)  # select 2 units from stratum 1, 1 from stratum 2 and 3 from 3
stratsrs(strat,nh)