logLik.gnlsStruct {nlme} | R Documentation |

## Log-Likelihood of a gnlsStruct Object

### Description

`Pars`

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

and the individual log-likelihood
contributions of each component are added together.

### Usage

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

### Arguments

`object` |
an object inheriting from class `gnlsStruct` ,
representing a list of model components, such as
`corStruct` and `varFunc` objects, and attributes
specifying the underlying nonlinear model and the response variable. |

`Pars` |
the parameter values at which the 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 nonlinear model. Defaults to ```
attr(object,
"conLin")
``` . |

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

### Value

the 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

`gnls`

, `gnlsStruct`

[Package

*nlme* version 3.1-57

Index]