I think you want: glm(y ~ x + I(x^2), ...)
This is shown as an example on pg 50 of "An Introduction to R" (R-2.2.0-pdf). HTH, --sundar Jeffrey Stratford wrote: > R-users, > > I'm having some trouble getting .glm and glm.nb to run a polynomial. > I've used x*x and x^2 and neither works. I've checked out the archives > and they refer to an archive that's no longer working. > > I've seen that they use poly() but I'm following up my analysis with > cv.glm so I'd prefer to keep using glm. It's easier to just add a > column to my data but I'd rather code it. > > Thanks for the response... I appreciate the people that work on the > list. > > Jeff > > **************************************** > Jeffrey A. Stratford, Ph.D. > Postdoctoral Associate > 331 Funchess Hall > Department of Biological Sciences > Auburn University > Auburn, AL 36849 > 334-329-9198 > FAX 334-844-9234 > http://www.auburn.edu/~stratja > > ______________________________________________ > [email protected] mailing list > https://stat.ethz.ch/mailman/listinfo/r-help > PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html ______________________________________________ [email protected] mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html
