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billiger
2003 Mar 10
2
Biplots
I want to plot biplots. I have seen the function biplot, but there are
some extra features I would like, that I do not know how to achieve.
1. My observations, and my variables, fall into groups. Is there a way to,
say, plot the observations in several different colours, according to
which group the observation falls into? Similarly with the variables? I am
used to the lattice idiom, in which one