eugen pircalabelu wrote: > I'm trying to use the survey package to get a better point of view for my > data, but i need some piece of advice: > > i have some data from a survey which has been stratified using 2 criteria: > region(7 values), size of locality(5 values) Using the survey pakage how can > i define in a correct way this design (taking into account all 4 strata not > just one as in the Survey example) > > i have tried > > design<- svydesign(ids=~0, strata= c(~regiune,~size_loc), data=tabel) # for > 2 criteria > > and got this error > > Error in strata[, 1] : incorrect number of dimensions > My "tabel" looks like this:
According to ?svydesign, strata is a formula. The following should work (untested): design <- svydesign(ids=~0, strata=~regiune + size_loc, data=tabel) HTH, Tobias P.S. See http://faculty.washington.edu/tlumley/survey/ for all information relating to this package. -- Tobias Verbeke - Consultant Business & Decision Benelux Rue de la révolution 8 1000 Brussels - BELGIUM +32 499 36 33 15 [EMAIL PROTECTED] ______________________________________________ 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.
