This method initializes
object by evaluating its associated
covariate(s) and grouping factor, if any is present, in
calculating various dimensions and constants used by optimization
corStruct objects (see the appropriate
Dim method documentation), and assigning initial values for
the coefficients in
object, if none were present.
an object inheriting from class
a data frame in which to evaluate the variables defined in
this argument is included to make this method compatible with the generic.
an initialized object with the same class as
representing a correlation structure.
José Pinheiro and Douglas Bates [email protected]
Pinheiro, J.C., and Bates, D.M. (2000) "Mixed-Effects Models in S and S-PLUS", Springer.
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