Generalized Least Squares Structure

Usage

glsStruct(corStruct, varStruct)

Arguments

corStruct an optional corStruct object, representing a correlation structure. Default is NULL.
varStruct an optional varFunc object, representing a variance function structure. Default is NULL.

Description

A generalized least squares structure is a list of model components representing different sets of parameters in the linear model. A glsStruct may contain corStruct and varFunc objects. NULL arguments are not included in the glsStruct list.

Value

a list of model variance-covariance components determining the parameters to be estimated for the associated linear model.

Author(s)

Jose Pinheiro and Douglas Bates

See Also

gls, corStruct, varFunc

Examples

library(lme)
gls1 <- glsStruct(corAR1(), varPower())

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