library(data.table)
# basic example
inp <- as.data.frame(matrix(0, nrow=8, ncol=6))
colnames(inp) <- c("hhid","hh1","hh2","p1","p2","p3")
inp$hhid <- 1:8
inp$hh1[1:3] <- 1
inp$hh2[4:8] <- 1
inp$p1 <- c(1,1,2,1,0,1,2,1)
inp$p2 <- c(1,0,1,0,2,1,1,1)
inp$p3 <- c(1,1,0,2,1,0,2,0)
con <- list(hh1=35, hh2=65, p1=91, p2=65, p3=104)
res <- ipu(inp=inp, hid="hhid", con=con, verbose=FALSE)
# more sophisticated
# load sample and population data
data(eusilcS)
data(eusilcP)
# variable generation and preparation
eusilcS$hsize <- factor(eusilcS$hsize)
# make sure, factor levels in sample and population match
eusilcP$region <- factor(eusilcP$region, levels = levels(eusilcS$db040))
eusilcP$gender <- factor(eusilcP$gender, levels = levels(eusilcS$rb090))
eusilcP$hsize <- factor(eusilcP$hsize , levels = levels(eusilcS$hsize))
# generate input matrix
# we want to adjust to variable "db040" (region) as household variables and
# variable "rb090" (gender) as individual information
# \donttest{
library(data.table)
samp <- data.table(eusilcS)
pop <- data.table(eusilcP)
setkeyv(samp, "db030")
hh <- samp[!duplicated(samp$db030),]
hhpop <- pop[!duplicated(pop$hid),]
# reg contains for each region the number of households
reg <- data.table(model.matrix(~db040 +0, data=hh))
# hsize contains for each household size the number of households
hsize <- data.table(model.matrix(~factor(hsize) +0, data=hh))
# aggregate persons-level characteristics per household
# gender contains for each household the number of males and females
gender <- data.table(model.matrix(~db030+rb090 +0, data=samp))
setkeyv(gender, "db030")
gender <- gender[, lapply(.SD, sum), by = key(gender)]
# bind together and use it as input
inp <- cbind(reg, hsize, gender)
# the totals we want to calibrate to
con <- c(
as.list(xtabs(rep(1, nrow(hhpop)) ~ hhpop$region)),
as.list(xtabs(rep(1, nrow(hhpop)) ~ hhpop$hsize)),
as.list(xtabs(rep(1, nrow(eusilcP)) ~ eusilcP$gender))
)
# we need to have the same names as in 'inp'
names(con) <- setdiff(names(inp), "db030")
# run ipu und check results
res <- ipu(inp=inp, hid="db030", con=con, verbose=TRUE)
is <- sapply(2:(ncol(res)-1), function(x) {
sum(res[,x]*res$weights)
})
data.frame(required=unlist(con), is=is)
# }
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