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chareos
2012 Jun 21
1
lme random effects in additive models with interaction
...ut their interactions with Time into the model. But, I have two
data sets (Replication 1 and 2) and I want that Replication is random
effect. Here is my code:
knots <- default.knots(Time)
z <- outer(Time, knots, "-")
z <- z * (z > 0)
z<-z^2
i.size50 <- I(Size==50)
i.chargepos <- I(Charge=="+")
i.densitylow <- I(Density==0.001)
X <- cbind( I(Time^2),Time*i.size50,Time*i.chargepos,Time*i.densitylow)
Z <- cbind( z, z*i.size50, z*i.chargepos,z*i.densitylow)
K <- length(knots)
block.ind <- list(1:K, (K+1):(2*K),(2*K+1):(3*K),(3*K+1):(4*K))
Z.bl...