The R image file hddplot.RData has the following functions:

order.features()
scoreplot() 
simulate.scores()
balanced.sample()
acc.train.test()
plot.train.test() 
cvdisc() 
cvscores() 
cvplot()
qqthin() 
pcp()

Examples of their use can be found in the file hddplot.pdf,
which is the draft of a new section for chapter 11 of
"Data Analysis & Graphics Using R" (1st edn 2003, CUP,
with John Braun).

Scripts from hddplot.pdf are in hddplot.R

Data (Golub and golub.info) are in the file Golub.RData

John Maindonald
July 1 2005.