logDet.reStruct {nlme} | R Documentation |

## Extract reStruct Log-Determinants

### Description

Calculates, for each of the `pdMat`

components of `object`

,
the logarithm of the determinant of a square-root factor.

### Usage

## S3 method for class 'reStruct':
logDet(object, ...)

### Arguments

`object` |
an object inheriting from class `reStruct` ,
representing a random effects structure and consisting of a list of
`pdMat` objects. |

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

### Value

a vector with the log-determinants of square-root factors of the
`pdMat`

components of `object`

.

### Author(s)

Jose Pinheiro

### See Also

`reStruct`

, `pdMat`

### Examples

rs1 <- reStruct(list(A = pdSymm(diag(1:3), form = ~Score),
B = pdDiag(2 * diag(4), form = ~Educ)))
logDet(rs1)

[Package

*nlme* version 3.1-57

Index]