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743112
2012 Jun 28
1
the meaning of subscripts
Hi,
Now i am dealing with longitudinal data set and I want to see the rough
marginal plot for 2 variables separately.
I found the code from one example here,
reading <-
read.table("http://www.ats.ucla.edu/stat/R/examples/alda/data/reading_pp.txt",
header=T, sep=",")
reading[reading$id %in% c(4, 27, 31, 33, 41, 49, 69, 77, 87), ]
xyplot(piat~age | id
,