On 7/9/07 12:36 AM, eugen pircalabelu wrote: > I'm trying to use the Survey package for a stratified sample which has 4 criteria on which the stratification is based. I would like to get the corrected weights and for every element i get a weight of 1 > > E.g: tipping > > design <- svydesign (id=~1, strata= ~regiune + size_loc + age_rec_hhh + size_hh, data= tabel) > and then weights(design) > > gives me: 1,1,1,1,1,1,1,1,1,1,1,........... for each element
The weights are all 1 because you haven't told R how they should be calculated. If the sampling weights should be constant within strata, you can simply specify the population figures for each stratum in svydesign's fpc argument and it will calculate the weights for you. Various techniques for adjusting the weights are also supported; see http://faculty.washington.edu/tlumley/survey/example-poststrat.html James -- James Reilly Department of Statistics, University of Auckland Private Bag 92019, Auckland, New Zealand ______________________________________________ R-help@stat.math.ethz.ch mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.