creating a legend

[Savitri Appana <saviappana@yahoo.com>]

Hello S+ users,

I need some help/suggestions on specifying a legend
specific to a panel in a trellis setting.

I'm generating some plots using the 'xyplot' function.
 My call to 'xyplot' and attempt with 'key' were as
follows:

xyplot( y ~ x | fac1 %in% fac2, 
data = myData, subset = myData$fac2 %in% c(5:8), 
panel = panel.superpose, groups = id, type = "b", 
xlab = "Time", ylab = "Mean", layout = c(1,1) )

key(text = list(c(as.character(unique(myData$id)))), 
points = list(pch = 1), col = c(1:5), 
border = T, space="top", columns=5 )

When I do this, I get a key with ALL the ids present
in the dataset.  Is is possible to subset the key with
ids specific to the panel?

Your suggestions are greatly appreciated.


Thank you,
Savi

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