| Initialize.lmeStruct {nlme} | R Documentation |
The individual linear mixed-effects model components of the
lmeStruct list are initialized.
## S3 method for class 'lmeStruct': Initialize(object, data, groups, conLin, control, ...)
object |
an object inheriting from class lmeStruct,
representing a list of linear mixed-effects model components, such as
reStruct, corStruct, and varFunc objects. |
data |
a data frame in which to evaluate the variables defined in
formula(object). |
groups |
a data frame with the grouping factors corresponding to
the lme model associated with object as columns, sorted from
innermost to outermost grouping level. |
conLin |
an optional condensed linear model object, consisting of
a list with components "Xy", corresponding to a regression
matrix (X) combined with a response vector (y), and
"logLik", corresponding to the log-likelihood of the
underlying lme model. Defaults to attr(object, "conLin"). |
control |
an optional list with control parameters for the
initialization and optimization algorithms used in
lme. Defaults to list(niterEM=20, gradHess=TRUE),
implying that 20 EM iterations are to be used in the derivation of
initial estimates for the coefficients of the reStruct
component of object and, if possible, numerical gradient
vectors and Hessian matrices for the log-likelihood function are to
be used in the optimization algorithm. |
... |
some methods for this generic require additional arguments. None are used in this method. |
an lmeStruct object similar to object, but with
initialized model components.
Jose Pinheiro Jose.Pinheiro@pharma.novartis.com and Douglas Bates bates@stat.wisc.edu
lme, Initialize.reStruct,
Initialize.corStruct,
Initialize.varFunc, Initialize