pdMat objects
forming object, which have not yet been initialized, are
obtained using the methodology described in Bates and Pinheiro
(1998). These estimates may be refined using a series of EM
iterations, as described in Bates and Pinheiro (1998). The number of
EM iterations to be used is defined in control.## S3 method for class 'reStruct':
Initialize(object, data, conLin, control, \dots)reStruct,
representing a random effects structure and consisting of a list of
pdMat objects.formula(object)."Xy", corresponding to a regression matrix
(X) combined with a response vector (y), and
"logLik", corresponding to the log-lniterEM
controlling the number of iterations for the EM algorithm used to
refine initial parameter estimates. It is given as a list for
compatibility with other Initialize methodsreStruct object similar to object, but with all
pdMat components initialized.reStruct, pdMat