formula(object)
object
|
an object inheriting from class groupedData .
|
groupedData
object. This is a two-sided formula of the form
resp ~ cov | group
, with resp
is the response,
cov
is the primary covariate, and group
is the grouping
structure.object
.groupedData
library(lme) data(Orthodont) formula(Orthodont)