[S] Repeated Measures Analysis

[Xiao Gang Su <xgsu@wald.ucdavis.edu>]

Hi, all,

I was trying to facilitate a repeated measures analysis on a simulated
data with Splus 2000. And I kept getting the error message as below. 
Is there anyone who can help me with the problem? 


> data.uni <- cbind(id = rep(1:4, rep(3, 4)), 
        time = rep(paste("time",1:3,sep=""), 4), 
        group = as.factor(rep(c(1, 2, 2, 3), rep(3, 4))), 
        y = rnorm(3 * 4))
> summary(aov(y ~ group * time + Error(id), data = data.uni))
Warning messages:
  Numerical expression has 48 elements: only the first used
Error: Object "id" not found

Thanks in advance for your help.

Regards,
Xiao-Gang Su

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