formula.corStruct {nlme} | R Documentation |
This method function extracts the formula associated with a
corStruct
object, in which the covariate and the grouping
factor, if any is present, are defined.
formula(x, ...)
x |
an object inheriting from class corStruct
representing a correlation structure. |
... |
some methods for this generic require additional arguments. None are used in this method. |
an object of class formula
specifying the covariate and the
grouping factor, if any is present, associated with x
.
Jose Pinheiro Jose.Pinheiro@pharma.novartis.com and Douglas Bates bates@stat.wisc.edu
cs1 <- corCAR1(form = ~ Time | Mare) formula(cs1)