# 
# Written by:
# -- 
# John L. Weatherwax                2009-04-21
# 
# email: wax@alum.mit.edu
# 
# Please send comments and especially bug reports to the
# above email address.
# 
#-----

library(DAAG)

vltcv = stack( vlt[, 1:3] )

head( vltcv )

#table( vltcv$values, vltcv$ind )
table( vltcv )