If you don't get a prompt reply here, you might do better posting this on the r-sig-mixed-models list (for obvious reasons).
Cheers, Bert Bert Gunter "The trouble with having an open mind is that people keep coming along and sticking things into it." -- Opus (aka Berkeley Breathed in his "Bloom County" comic strip ) On Tue, Jun 13, 2017 at 11:25 AM, Don Cohen <don-r-h...@isis.cs3-inc.com> wrote: > Is there a difference between I(x*y) and I(y*x) ? > I have a call to lmer that results in this complaint: > Error in is.alpha2.subordinate * ~z.min.co.res : > non-numeric argument to binary operator > when I change this line: > I(is.alpha2.subordinate*z.min.co.res)+ > to this: > I(z.min.co.res*is.alpha2.subordinate)+ > the complaint goes away. > I'd like to understand why. > > ______________________________________________ > R-help@r-project.org mailing list -- To UNSUBSCRIBE and more, see > 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 -- To UNSUBSCRIBE and more, see 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.
