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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.b...