Dear Ahmed, Can you give a more specific example of what you want to do? Do you mean you want to test specific contrasts for a categorical variable?
If you are new to R, you will find it helpful to read the Introduction to R http://cran.r-project.org/doc/manuals/R-intro.html I also recommend going through an introductory book. There are many, my personal favorite is: "Introductory Statistics with R" by Peter Dalgaard Cheers, Josh On Sun, Nov 21, 2010 at 3:28 PM, Ahmed Attia <[email protected]> wrote: > On 11/21/10 11:24, Ahmed Attia wrote: >> ---------- Forwarded message ---------- >> From: Ahmed Attia <[email protected]> >> Date: Sun, Nov 21, 2010 at 11:06 AM >> Subject: R help >> To: [email protected] >> >> >> Dear All, >> >> I'm a beginner user in R and I would like to make a quadratic plus plateau >> and linear plus plateau modelsin R. Can you help please with an example? >> >> Thanks so much >> >> >> >> -- >> Ahmed M. Attia >> Assistant Lecturer >> El-Khattara farm Station >> Agronomy Dept., >> Zgazig Univ., Egypt >> Visiting Scientist >> Haskell Agricultural laboratory >> Agronomy and Horticultural Dept., >> Univ. of Nebraska-Lincoln >> [email protected] >> [email protected] >> Cell phone: 4023604178 [snip extra signatures] -- Joshua Wiley Ph.D. Student, Health Psychology University of California, Los Angeles http://www.joshuawiley.com/ ______________________________________________ [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 and provide commented, minimal, self-contained, reproducible code.
