lmeStruct {nlme} | R Documentation

## Linear Mixed-Effects Structure

### Description

A linear mixed-effects structure is a list of model components representing different sets of parameters in the linear mixed-effects model. An `lmeStruct` list must contain at least a `reStruct` object, but may also contain `corStruct` and `varFunc` objects. `NULL` arguments are not included in the `lmeStruct` list.

### Usage

    lmeStruct(reStruct, corStruct, varStruct)

### Arguments

`reStruct` | a `reStruct` representing a random effects structure.
`corStruct` | an optional `corStruct` object, representing a correlation structure. Default is `NULL`.
`varStruct` | an optional `varFunc` object, representing a variance function structure. Default is `NULL`.

### Value

a list of model components determining the parameters to be estimated for the associated linear mixed-effects model.

### Author(s)

José Pinheiro and Douglas Bates bates@stat.wisc.edu

### See Also

`corClasses`, `lme`, `residuals.lmeStruct`, `reStruct`, `varFunc`

### Examples

    lms1 <- lmeStruct(reStruct(~age), corAR1(), varPower())

[Package nlme version 3.1-131 Index]