Recalculate for varFunc Object

DESCRIPTION:

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 object e and adds the log-likelihood contribution of object , given by logLik(object), to the logLik component of conLin.

USAGE:

recalc(object, conLin) 

REQUIRED ARGUMENTS:

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.

VALUE:

the recalculated condensed linear model object. NOTE: This method function is only used inside model fitting functions, such as lme and gls, that allow heteroscedastic error terms.

SEE ALSO:

,