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high
2011 Jul 29
2
Multifactor boxplots
Dear All
I would like to produce interaction boxplots and this seems to work:
par(mfrow=c(2,2))
A=sample(rnorm(50,50,10))
B=sample(rnorm(50,100,10))
Test=merge(A,B,by=0)#by=0 where 0 is the row.names
TreatA=(gl(2,50,100,labels=c("High","Low")))
TreatB=rep(gl(2,25,50,labels=c("High","Low")),2)
Newdata=data.frame(TreatA,TreatB,Test)