[R] function for between-groups covariance matrix?

[toby]

Hi

Is anyone aware if there is a function already available that calculates the
between-groups COvariance matrix, say in a discriminant analysis setting, or in
a manova setting.

Maybe as a helper function to some other major function.

Otherwise I would have to program it myself (probably resulting in some awkward
code performing horribly on this large dataset).

Thanks Toby