pps (version 1.0)

ppssstrat: Stratified PPS systematic sampling

Description

In each stratum, select a sample using pps systematic sampling

Usage

ppssstrat(sizes,stratum,n)

Arguments

sizes

A vector of the sizes of the units in the population, sorted by stratum

stratum

A vector of stratum codes, in the same order

n

A vector containing the sample size in each stratum

Value

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

Examples

# NOT RUN {
sizes <- c(1:5,10:6)*10
strat <- c(1,1,1,2,2,3,3,3,3,3)
n <- c(2,1,3)
ppssstrat(sizes,strat,n)
# }