.\" -*- nroff -*- generated from .Rd format
.BG
.FN corBandNat
.TL
Banded Correlation in Natural Parameterization
.DN
This method function converts `object' into 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. This `corStruct' class does not define an unrestricted
parameterization and, thus, should NOT be used for optimization. It
is mostly used for deriving  approximate confidence intervals on
parameters following the optimization of an objective function.
.CS
corBandNat(object, unconstrained)
.RA
.AG object
an object inheriting from class `corBand',
representing a banded correlation structure, whose
representation is to be converted to a natural parameterization. 

.OA
.AG unconstrained
an optional logical value indicating whether the
natural parameterization should be unconstrained. Defaults to
`TRUE'. 

.RT
an object of class `corBandNat' representing a general
correlation structure in natural parameterization.

.SA
`asNatural.corBandNat', `corBand'
.EX
cst1 <- corBand(form = ~1|Subject)
cst1 <- initialize(cst1, data = Orthodont)
corBandNat(cst1, unc = F)
.KW models
.WR
