Convert corBand Object to Natural Parameterization
DESCRIPTION:
This method function converts
object to a
corBandNat
object, represented in a natural parameterization. If
unconstrained = TRUE
, an unconstrained parameterization based
on the logit of the correlations
(log((1+r)/(1-r)), with r denoting
the correlation) is used. If
unconstrained
is set to
FALSE, the (constrained)
correlations are used to parameterize the returned
corBandNat
object.
USAGE:
asNatural(object, unconstrained)
REQUIRED ARGUMENTS:
object
an object inheriting from class
corBand,
representing a banded correlation structure, whose
representation is to be converted to a natural parameterization.
OPTIONAL ARGUMENTS:
unconstrained
an optional logical value indicating whether the
natural parameterization should be unconstrained. Defaults to
TRUE.
VALUE:
an object of class
corBandNat representing a banded
correlation structure in natural parameterization.