[Rd] Orthogonal polynomial ANOVA or polynomial regression?

2011-03-24 Thread Dominick Samperi
Hi, I have not been able to find R tools that permit an orthogonal polynomial ANOVA analysis: single degree of freedom F-test comparisons including L, Q, C, etc. terms. Do such tools exist? I guess you can accomplish something similar by doing straightforward polynomial regression and removing

Re: [Rd] Orthogonal polynomial ANOVA or polynomial regression?

2011-03-24 Thread peter dalgaard
On Mar 24, 2011, at 16:53 , Dominick Samperi wrote: Hi, I have not been able to find R tools that permit an orthogonal polynomial ANOVA analysis: single degree of freedom F-test comparisons including L, Q, C, etc. terms. Do such tools exist? I guess you can accomplish something similar