[BioC] Manova nuances

[Michael Benjamin]

Anybody here using manova?  It's powerful and pretty fast, but I'm
finding that you can't have more variables than samples (limits its
applicability to microarray research).  Is there any way around this?
Assume

dim(eset)

1200 35

transeset<-t(eset)
fit<-manova(transeset ~ categories)
summary(fit)

There is probably a complicated mathematical truth that underlies this
limitation--if anybody can shed some light, that would be great.

Also, if anyone knows of a quick, free multivariate tool that summarizes
all the tests into a single test statistic, that would be much
appreciated.

Regards,
Michael Benjamin, MD
Emory University
Winship Cancer Institute