[R] Split-plot model

Chreis Habeck arvicolinae at hotmail.com
Wed Aug 9 00:11:17 CEST 2006

How do I set up my model equation in aov to analyze a split-plot design?

I have two factors (CO2 and NITROGEN), each with two levels (high and 
ambient).   CO2 is my whole-plot factor with three replicates for each level 
(i.e., 6 rooms total).

Is this syntax below correct?

summary(aov(response ~ ROOM + CO2*NITROGEN + Error(ROOM/CO2)))

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