sampling (version 0.1)

UPpoisson: Poisson sampling

Description

Draw a Poisson sample, by using a prescribed vector of first order inclusion probabilities (unequal probabilities, without replacement, random sample size).

Usage

UPpoisson(pik)

Arguments

pik

vector of first order inclusion probabilities of size N.

Details

Return a vector of size N (N is the size population), indicating the unit status (0-unselected, 1-selected).

See Also

inclusionprobabilities

Examples

############
## Example 1
############
# definition of pik
pik=c(1/3,1/3,1/3)
# select a sample
UPpoisson(pik)
############
## Example 2
############
data(belgianmunicipalities)
Tot=belgianmunicipalities$Tot04
name=belgianmunicipalities$Commune
n=200
pik=inclusionprobabilities(Tot,n)
# select a sample
s=UPpoisson(pik)  
as.vector(name[s==1])