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