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nlme (version 3.1-166)

glsStruct: Generalized Least Squares Structure

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.

Usage

glsStruct(corStruct, varStruct)

Value

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

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.

Author

José Pinheiro and Douglas Bates bates@stat.wisc.edu

See Also

corClasses, gls, residuals.glsStruct, varFunc

Examples

Run this code
gls1 <- glsStruct(corAR1(), varPower())

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