coef.modelStruct {nlme} | R Documentation |

## Extract modelStruct Object Coefficients

### Description

This method function extracts the coefficients associated with each
component of the `modelStruct`

list.

### Usage

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

### Arguments

`object` |
an object inheriting from class `modelStruct` ,
representing a list of model components, such as `corStruct` and
`varFunc` 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 all coefficients corresponding to the components of
`object`

.

### SIDE EFFECTS

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

to `value`

. `Object`

must be initialized (using
`Initialize`

) before new values can be assigned to its
coefficients.

### Author(s)

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

### See Also

`Initialize`

### Examples

lms1 <- lmeStruct(reStruct = reStruct(pdDiag(diag(2), ~age)),
corStruct = corAR1(0.3))
coef(lms1)

[Package

*nlme* version 3.1-57

Index]