[R] ANOVA non-sphericity test and corrections (eg, Greenhouse-Geisser)

[John Wilkinson]

Darren,

Further to Peter Dalgaard's help;

Take a look at the example in ---

library(car)
?Anova  # note upper case 'A' 

The example in the Anova help page following the ---

## a multivariate linear model for repeated-measures data
## See ?OBrienKaiser for a description of the data set used in this example

gives a workings for --

## Greenhouse-Geisser and Huynh-Feldt Corrections
##  for Departure from Compound Symmetry

You might find that example helpful.

John