residuals.lmList {nlme} | R Documentation

## Extract lmList Residuals

### Description

The residuals are extracted from each `lm` component of `object` and arranged into a list with as many components as `object`, or combined into a single vector.

### Usage

    ## S3 method for class 'lmList'
    residuals(object, type, subset, asList, ...)

### Arguments

`object` | an object inheriting from class `"lmList"`, representing a list of `lm` objects with a common model.
`subset` | an optional character or integer vector naming the `lm` components of `object` from which the residuals are to be extracted. Default is `NULL`, in which case all components are used.

`type`

an optional character string specifying the type of residuals to be extracted. Options include `"response"` for the "raw" residuals (observed - fitted), `"pearson"` for the standardized residuals (raw residuals divided by the estimated residual standard error) using different standard errors for each `lm` fit, and `"pooled.pearson"` for the standardized residuals using a pooled estimate of the residual standard error. Partial matching of arguments is used, so only the first character needs to be provided. Defaults to `"response"`.

`asList` | an optional logical value. If `TRUE`, the returned object is a list with the residuals split by groups; else the returned value is a vector. Defaults to `FALSE`.
`...` | some methods for this generic require additional arguments. None are used in this method.

### Value

a list with components given by the residuals of each `lm` component of `object`, or a vector with the residuals for all `lm` components of `object`.

### Author(s)

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

### See Also

`lmList`, `fitted.lmList`

### Examples

    fm1 <- lmList(distance ~ age | Subject, Orthodont)
    residuals(fm1)

[Package nlme version 3.1-139 Index]