recalc.corStruct {nlme} | R Documentation |

## Recalculate for corStruct Object

### Description

This method function pre-multiples the `"Xy"`

component of
`conLin`

by the transpose square-root factor(s) of the
correlation matrix (matrices) associated with `object`

and adds
the log-likelihood contribution of `object`

, given by
`logLik(object)`

, to the `"logLik"`

component of
`conLin`

.

### Usage

## S3 method for class 'corStruct':
recalc(object, conLin, ...)

### Arguments

`object` |
an object inheriting from class `corStruct` ,
representing a correlation structure. |

`conLin` |
a 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 model. |

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

### Value

the recalculated condensed linear model object.

### Note

This method function is only used inside model fitting functions,
such as `lme`

and `gls`

, that allow correlated error terms.

### Author(s)

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

### See Also

`corFactor`

, `logLik.corStruct`

[Package

*nlme* version 3.1-57

Index]