Hi > > Hi, > > Does anyone know how to show zero frequencies variable levels with the > xtabs command? They show with the table(x,y) command but I need to apply
> weight to frequency tables and I also need to cbind several tables > together, which implies that they all need to show the same number of rows. Do you use factors? x<-sample(letters[1:5], 20, replace=T) xtabs(~x) x a b c d e 2 1 5 4 8 x.f<-factor(x) x[x=="b"]<-NA x.f[x.f=="b"]<-NA > xtabs(~x) x a c d e 2 5 4 8 > xtabs(~x.f) x.f a b c d e 2 0 5 4 8 With factors you can specify also non existent levels so they shall appear as zeroes in table or xtabs. Regards Petr > > Alternatively, do you know how to column bind tables with different number > of rows? I cannot use merge as it requires daata.frame and that modifies > the look of the banner table I am trying to create... > > 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. ______________________________________________ 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.
