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 0.15-4 Index]