Makes sense, Marc - thanks a lot! On Mon, Apr 18, 2011 at 3:54 PM, Marc Schwartz <marc_schwa...@me.com> wrote: > On Apr 18, 2011, at 2:44 PM, Dimitri Liakhovitski wrote: > >> Hello! >> >> I am trying to create a formula object using as.formula. But it's not >> working: >> >> examplephraze<-"for.my.example" >> myformula<-as.formula(paste(examplephraze,"~group, sum, data=mydata",sep="")) >> >> What's the problem? >> Thanks a lot! > > > The actual 'formula' part consists *only* of the actual model specification > formula (LHS ~ RHS), not the additional arguments to a model function or > other function that takes a formula as an argument (eg. boxplot()). > > Thus: > > myformula <- as.formula(paste(examplephraze,"~group")) > >> myformula > for.my.example ~ group > > > HTH, > > Marc Schwartz > >
-- Dimitri Liakhovitski Ninah Consulting www.ninah.com ______________________________________________ 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.
