Hi David, Unfortunately I need to use the "should have been" frequencies if the sample corresponded perfectly in terms of some "reference" variables to the population.
That is, if in my sample I observe V1_R1=10%, V1_R2=50%, V3_R3=40% while the same known population distribution is V1_R1=20%, V1_R2=30%, V3_R3=50% then I would like to see what V2*V3, V2*V4, ... , V2* VN, V3*V4, ... ,VN-1 * VN would have been had the sample perfectly reflect the population in terms of V1. I hope that clarifies what I am trying to achieve... Thanks, Luca Il giorno 29/ago/2011, alle ore 16.29, David L Carlson ha scritto: > If you are talking about weights that are the frequencies in each cell, you > can use xtabs(): > > df <- data.frame(Var1=c("Absent", "Present", "Absent", "Present"), > Var2=c("Absent", "Absent", "Present", "Present"), Freq=c(17, 6, 3, 12)) > df > xtabs(Freq~Var1+Var2, data=df) > > ---------------------------------------------- > David L Carlson > Associate Professor of Anthropology > Texas A&M University > College Station, TX 77843-4352 > > > > -----Original Message----- > From: r-help-boun...@r-project.org [mailto:r-help-boun...@r-project.org] On > Behalf Of Leandro Marino > Sent: Sunday, August 28, 2011 12:15 PM > To: Luca Meyer > Cc: r-help@r-project.org > Subject: Re: [R] How do I get a weighted frequency table? > > *Luca, > * > > > you may use survey package. You have to declare the design with design > function and than you can you svytotal, svyby, svymean functions to do your > tabulations. > > Regards, > Leandro > > > > Atenciosamente, > Leandro Marino > http://www.leandromarino.com.br (Fotsgrafo) > http://est.leandromarino.com.br/Blog (Estatmstico) > Cel.: + 55 21 9845-7707 > Cel.: + 55 21 8777-7907 > > > > 2011/8/28 Luca Meyer <lucam1...@gmail.com> > >> Hello, >> >> I have to run a set of crosstabulations to which I need to apply some >> weights. I am currently doing an unweighted version of such crosstabs >> using table(x,y). >> >> I am used with SPSS to create a weighting variable and to use WEIGHT >> BY VAR before running the CTABLES, is there a similar procedure in R? >> >> Thanks, >> Luca >> >> Mr. Luca Meyer >> www.lucameyer.com >> R version 2.13.1 (2011-07-08) >> Mac OS X 10.6.8 >> >> >> >> >> >> >> >> [[alternative HTML version deleted]] >> >> ______________________________________________ >> R-help@r-project.org 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. >> > > [[alternative HTML version deleted]] > > ______________________________________________ R-help@r-project.org 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.