R: Fit One-way Model

B_11_oneway {lattice} | R Documentation

## Fit One-way Model

### Description

Fits a One-way model to univariate data grouped by a factor, the result often being displayed using `rfs`

### Usage

    oneway(formula, data, location=mean, spread=function(x) sqrt(var(x)))

### Arguments

`formula` | formula of the form `y ~ x` where `y` is the numeric response and `x` is the grouping factor
`data` | data frame in which the model is to be evaluated
`location` | function or numeric giving the location statistic to be used for centering the observations, e.g. `median`, 0 (to avoid centering).
`spread` | function or numeric giving the spread statistic to be used for scaling the observations, e.g. `sd`, 1 (to avoid scaling).

### Value

A list with components

`location` | vector of locations for each group.
`spread` | vector of spreads for each group.
`fitted.values` | vector of locations for each observation.
`residuals` | residuals (`y - fitted.values`).
`scaled.residuals` | residuals scaled by `spread` for their group

### Author(s)

Deepayan Sarkar Deepayan.Sarkar@R-project.org

### See Also

`rfs`, `Lattice`

[Package lattice version 0.20-29 Index]