[R] Orthogonal polynomial contrasts

Chris Bennett bop07crb at sheffield.ac.uk
Thu Apr 10 13:57:06 CEST 2008



How do you remove one of the terms from an ordered polynomial contrast in
your linear model.  For example, I have significant terms for linear and
cubic but not quadratic, how would i remove the quadratic term from
lm(response~treatment)

Cheers,
Chris
-- 
View this message in context: http://www.nabble.com/Orthogonal-polynomial-contrasts-tp16608353p16608353.html
Sent from the R help mailing list archive at Nabble.com.



More information about the R-help mailing list