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Re: Putting a identifying numbers in

To: "Park, Kyong H Mr ECBC" <kyong.ho.park@us.army.mil>, "'S-plus post'" <s-news@wubios.wustl.edu>
Subject: Re: Putting a identifying numbers in
From: "Richard M. Heiberger" <rmh@temple.edu>
Date: Fri, 31 Mar 2006 11:21:16 -0500
tmp <- data.frame(yhat=rnorm(12),
                  resid=rnorm(12),
                  group=factor(rep(c("a","b"),6)))
xyplot(resid ~ yhat, groups=group, data=tmp, panel=panel.superpose)
xyplot(resid ~ yhat, groups=group, data=tmp, panel=panel.superpose, 
pch=c("a","b"))
xyplot(resid ~ yhat, groups=group, data=tmp, panel=panel.superpose, 
pch=c("1","2"))

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