logLik.glsStruct {nlme} | R Documentation |

## Log-Likelihood of a glsStruct Object

### Description

`Pars`

is used to update the coefficients of the model components
of `object`

and the individual (restricted) log-likelihood
contributions of each component are added together. The type of
log-likelihood (restricted or not) is determined by the
`settings`

attribute of `object`

.

### Usage

## S3 method for class 'glsStruct':
logLik(object, Pars, conLin, ...)

### Arguments

`object` |
an object inheriting from class `glsStruct` ,
representing a list of linear model components, such as
`corStruct` and `varFunc` objects. |

`Pars` |
the parameter values at which the (restricted)
log-likelihood is to be evaluated. |

`conLin` |
an optional condensed linear model object, consisting of
a list with components `"Xy"` , corresponding to a regression
matrix (`X` ) combined with a response vector (`y` ), and
`"logLik"` , corresponding to the log-likelihood of the
underlying linear model. Defaults to `attr(object, "conLin")` . |

`...` |
some methods for this generic require additional
arguments. None are used in this method. |

### Value

the (restricted) log-likelihood for the linear model described by
`object`

, evaluated at `Pars`

.

### Author(s)

Jose Pinheiro Jose.Pinheiro@pharma.novartis.com and Douglas Bates bates@stat.wisc.edu

### See Also

`gls`

, `glsStruct`

[Package

*nlme* version 3.1-57

Index]