logLik.varFunc {nlme} | R Documentation |

## Extract varFunc logLik

### Description

This method function extracts the component of a Gaussian
log-likelihood associated with the variance function structure
represented by `object`

, which is equal to the sum of the
logarithms of the corresponding weights.

### Usage

## S3 method for class 'varFunc':
logLik(object, data, ...)

### Arguments

`object` |
an object inheriting from class `varFunc` ,
representing a variance function structure. |

`data` |
this argument is included to make this method function
compatible with other `logLik` methods and will be ignored. |

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

### Value

the sum of the logarithms of the weights corresponding to the variance
function structure represented by `object`

.

### Author(s)

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

### See Also

`logLik.lme`

### Examples

vf1 <- varPower(form = ~age)
vf1 <- Initialize(vf1, Orthodont)
coef(vf1) <- 0.1
logLik(vf1)

[Package

*nlme* version 3.1-80

Index]