pig.weights {} | R Documentation |
The pig.weights
data frame has 9 repeated
weight measures on 48 pigs.
data(pig.weights)
This data frame contains the following columns:
Diggle, P.J., Heagerty, P., Liang, K.-Y. and Zeger, S.L. (2002). Analysis of Longitudinal Data, Second Edition, Oxord: Oxford University Press.
Ruppert, D., Wand, M.P. and Carroll, R.J. (2003)
Semiparametric Regression Cambridge University Press.
http://stat.tamu.edu/~carroll/semiregbook/
library(SemiPar) data(pig.weights) library(lattice) xyplot(weight~num.weeks,data=pig.weights,groups=id.num,type="b")