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period
2010 Jun 01
1
using the design matrix to correctly configure contrasts
...t;,
"t9", "t10", "t11", "t12",
"t13", "t14", "t15", "t16"))
Tissue <- factor(targets$Tissue, levels = c("R", "C"))
Pperiod <- factor(targets$Pperiod, levels = c("E", "L", "S"))
#model excluding the 3-way interaction (written for convenience to
# build on previous 2-way ANOVA
design <- model.matrix(~Time + Tissue + Pperiod + Time:Tissue +
Time:Pperiod + Tissue:Pperiod)
fit <- lm...