| recalc.varFunc {nlme} | R Documentation |
This method function pre-multiples the "Xy" component of
conLin by a diagonal matrix with diagonal elements given by the
weights corresponding to the variance structure represented by
objecte and adds the log-likelihood contribution of
object, given by logLik(object), to the "logLik"
component of conLin.
## S3 method for class 'varFunc': recalc(object, conLin, ...)
object |
an object inheriting from class varFunc,
representing a variance function structure. |
conLin |
a 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 model. |
... |
some methods for this generic require additional arguments. None are used in this method. |
the recalculated condensed linear model object.
This method function is only used inside model fitting functions,
such as lme and gls, that allow heteroscedastic error
terms.
Jose Pinheiro Jose.Pinheiro@pharma.novartis.com and Douglas Bates bates@stat.wisc.edu