UPminimalsupport {sampling} | R Documentation |
Use minimal support method to select a sample of units (unequal probabilities, without replacement, fixed sample size).
UPminimalsupport(pik)
pik |
vector of prescribed inclusion probabilities. |
Return a vector (0 and 1) of size N, where N is the population size.
Deville, J.-C., Tillé Y. (1998), Unequal probability sampling without replacement through a splitting method, Biometrika , 85, 89-101.
############ ## Example 1 ############ #define the prescribed inclusion probabilities pik=c(0.2,0.7,0.8,0.5,0.4,0.4) #select a sample UPminimalsupport(pik) ############ ## Example 2 ############ data(belgianmunicipalities) Tot=belgianmunicipalities$Tot04 name=belgianmunicipalities$Commune pik=inclusionprobabilities(Tot,200) #select a sample s=UPminimalsupport(pik) as.vector(name[s==1])