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fac1
2004 Mar 18
1
help with aov
...simple model
y<-1:12+rnorm(12)
fac1<-c(rep("A",4),rep("B",4),rep("C",4))
fac2<-rep(c("D","C"),6)
dat<-data.frame(y,fac1,fac2)
tmp<-aov(y~fac1+fac2,dat)
the command tmp$coeff gives the fllowing results :
(Intercept) fac1B fac1C fac2D
3.307888 2.898187 7.409010 -1.088588
But mean(y) gives 6.199327 and is different of Intercept..
So, I don't understand the parametrization with the aov() function.
I would like the estimations with the constraints
fac1A+fac1B+fac1C =0 and fac2D+fac2C=0...
What is the solu...