On Wed, Apr 17, 2013 at 2:33 PM, Marc Schwartz <marc_schwa...@me.com> wrote: > If you only want up to say second order interactions: > >> summary(lm(mpg ~ (cyl + disp + hp + drat) ^ 2, data = mtcars)) > This is what I was looking for. Thank you so much.
> This is covered in ?formula > Indeed. I tried to parse ?formula at several occasions in the past few years, but never quite grasped it fully. Thanks again, Liviu ______________________________________________ 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.
