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 3.1-73 Index]