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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.
glsStruct(corStruct, varStruct)an optional corStruct object, representing a
correlation structure. Default is NULL.
an optional varFunc object, representing a
variance function structure. Default is NULL.
a list of model variance-covariance components determining the parameters to be estimated for the associated linear model.
# NOT RUN {
gls1 <- glsStruct(corAR1(), varPower())
# }
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