Hi,I would like add a horizontal line at 126 (col=red) and a vertical line
at 6.5 ( col= blue) in each panel .How should I use the panel.abline
function in the following code I am using:
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library(lattice)
with(reg.dat.5,coplot(lbxglu~lbxgh|eth,panel=panel.smooth,xlab="ABC",
ylab="FBG"))
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Thanks a lot.

Professor of Family Medicine
Boston University
Tel: 617-414-6221, Fax:617-414-3345
emails: chettyvk@gmail.com,vchetty@bu.edu

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