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 BatesSee Also
gls
, corStruct
,
varFunc
Examples
library(lme)
gls1 <- glsStruct(corAR1(), varPower())