Dear all,
In the SASmixed package there is an example of an analysis of a split-plot experiment.
The model is
fm1Semi <- lme( resistance ~ ET * position, data = Semiconductor, random = ~ 1 | Grp)
where Grp in the Semiconductor dataset is defined as ET*Wafer. Is it possible to
specify the grouping directly some way, e.g. like
fm1Semi <- lme( resistance ~ ET * position, data = Semiconductor, random = ~ 1 |
ET*Wafer)
(this does not work, I know, but somehow I would expect it to be possible to get
around having to define a new variable in the dataset)...
Thanks in advance
S�ren H�jsgaard
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