> Hi. > > I have been learning R in order to use it for a class in design of > experiments. > > I have been using the command lme() to reproduce results from Montgomery's > book "Design and Analysis of experiments". > > I have a quantitative response variable called capacity, and two random > treatment factors: operator and part (already declared as factors in R). > > I have been trying to estimate this model with the command: > > > > lme(capacity~1,random=~1| (part*operator)) > > This worked for the analysis with just one random factor, but now it´s not > working. Could anyone tell me how would be the correct syntax? I would > highly appreciate it. > > > Gilbert Brenes > > >
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