On Sun, Feb 23, 2014 at 7:40 PM, C W <tmrs...@gmail.com> wrote: > Gabor, > Your response worked perfectly, list(t = 1, q = factor(1, 1:4) was what I > couldn't figure out. Thank you. > > In predict.lm(model, newdata), 2nd argument MUST be data.frame(). Why does > list() also work? >
Yes, it would be better to use a data.frame here to be consistent with the documentation even though a list does work. -- Statistics & Software Consulting GKX Group, GKX Associates Inc. tel: 1-877-GKX-GROUP email: ggrothendieck at gmail.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.
