Rolf Turner wrote
>Your example is a bit confusing ---
Sorry, maybe I can provide a better example above of what I want.
> ``add'' and ``col'' do not seem to be arguments for boxplot().
Are you sure? ;-) Maybe you could want to take a look to this:
clyde <- rnorm(100)
melvin <- sample(letters[1:4],100,TRUE)
melvin[melvin=="b"] <- "c"
melvin <- factor(melvin,levels=letters[1:4])
boxplot((clyde+2) ~
melvin,add=FALSE,col=c("gray20","white","gray60","gray90"))
boxplot((clyde/5) ~
melvin,add=TRUE,col=c("red","blue","yellow","lavender"))
I'm intending to do something like this (but less psychodelic, only two
colors :-) , and with a single boxplot in b)
I am sudying also your idea, Thanks Rolf.
Sincerely
Pablo Valdes
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