On Mon, Oct 8, 2012 at 3:49 AM, Jhope <jeanwaij...@gmail.com> wrote: > Hi R-listers, > > I am wondering if the function aov() in plyr is appropriate for two > different types of tests: > > 1) > summary(aov(EDI ~ VegIndex, data=data.to.analyze)) > > AND > > 2) > summary(aov(HSuccess ~ VegIndex + Aeventexhumed + > VegIndex:Aeventexhumed, data=data.to.analyze)) > > the later inclusive of an interaction of the two explanatory variables. > > This is for obtaining P value and F statistics. > > Please advise, Jean
1) aov() is not from plyr. If you type "aov" at the prompt (no parentheses) you'll see its clearly from stats. 2) You can write hSuccess ~ VegIndex + Aeventexhumed + VegIndex:Aeventexhumed more easily as hSuccess ~ VegIndex * Aeventexhumed 3) Yes it should. Run example(aov) to see how. Cheers, Michael ______________________________________________ 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.
