coef.reStruct {nlme} | R Documentation |

## reStruct Object Coefficients

### Description

This method function extracts the coefficients associated with the
positive-definite matrix represented by `object`

.

### Usage

## S3 method for class 'reStruct':
coef(object, unconstrained, ...)
## S3 method for class 'reStruct':
coef(object, ...) <- value

### Arguments

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

`unconstrained` |
a logical value. If `TRUE` the coefficients
are returned in unconstrained form (the same used in the optimization
algorithm). If `FALSE` the coefficients are returned in
"natural", possibly constrained, form. Defaults to `TRUE` . |

`value` |
a vector with the replacement values for the coefficients
associated with `object` . It must be a vector with the same length
of `coef(object)` and must be given in unconstrained form. |

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

### Value

a vector with the coefficients corresponding to `object`

.

### SIDE EFFECTS

On the left side of an assignment, sets the values of the coefficients
of `object`

to `value`

.

### Author(s)

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

### See Also

`coef.pdMat`

, `reStruct`

,
`pdMat`

### Examples

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

[Package

*nlme* version 3.1-66

Index]