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2007 May 03
2
Package contrast error
Trying to use contrast to look at differences within an lme
lme.fnl.REML <- lme(Max ~ S + Tr + Yr + Tr:Yr, random = ~1 |TID,
method = "REML")
I have three levels of Tr I'm trying to contrast among different
years (R, T97, T98), years = 1997-1999, so I'm interested in
contrasts of the interaction term.
> anova(lme.fnl.REML)
numDF denDF F-value p-value
(Intercept) 1 168 19255.389 <.0001
S 1 168 5.912 0.0161
Tr 2 116 15.919 <.0001
Yr...