R: Extract lmList Residuals

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)

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

Examples

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

[Package nlme version 3.1-104 Index]