Hi all.
Consider the following example from ggplot vignette:

ggpoint( ggplot(tips, .~sex, ae=list(y=tip, x=total_bill)) )

You have one scatterplot per sex. With 'ggabline' I can add one or more
lines to each subplot at the same time.
How can I add different lines in each subplot?
Note that I have 0<knowledge<little of grid graphics.

Antonio.
-- 
Antonio, Fabio Di Narzo
Ph.D. student at
Department of Statistical Sciences
University of Bologna, Italy

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