stats (version 3.3.2)

manova: Multivariate Analysis of Variance

Description

A class for the multivariate analysis of variance.

Usage

manova(…)

Arguments

…

Arguments to be passed to aov.

Value

See aov and the comments in ‘Details’ here.

Details

Class "manova" differs from class "aov" in selecting a different summary method. Function manova calls aov and then add class "manova" to the result object for each stratum.

References

Krzanowski, W. J. (1988) Principles of Multivariate Analysis. A User's Perspective. Oxford. Hand, D. J. and Taylor, C. C. (1987) Multivariate Analysis of Variance and Repeated Measures. Chapman and Hall.

See Also

aov, summary.manova, the latter containing more examples.

Examples

## Set orthogonal contrasts.
op <- options(contrasts = c("contr.helmert", "contr.poly"))

## Fake a 2nd response variable
npk2 <- within(npk, foo <- rnorm(24))
( npk2.aov <- manova(cbind(yield, foo) ~ block + N*P*K, npk2) )
summary(npk2.aov)

( npk2.aovE <- manova(cbind(yield, foo) ~  N*P*K + Error(block), npk2) )
summary(npk2.aovE)