Berton Gunter <[EMAIL PROTECTED]> wrote:
> plot(myscores[,1:2],pch=c('s','c','v')[groups])
Thanks, this works. How to understand the result of
the expression
> c(1,2,'3)[groups]
[1] 3 3 3 3 3 1 1 1 1 1 2 2 2 2 2
where
> groups <- factor(c(rep("X",5), rep("Y",5), rep("Z",5)))
?
Sorry if it's too basic.
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