The short answer is that you're trying to make a categorical interaction
out of
continuous variables, so that the resulting factors i2 and i3 have 1050 and
7200
levels respectively. (Note to people trying to reproduce this example:
you'll
need library(emdbook); library(bbmle); data(Lily_sum)
Use Rprof on a small sample and determine where the time is being
spent. Do some periodic gc() or memory.size() to see how fast you are
using up memory. Do an object.size on all your objects to see see how
be they are. This would help in the determination of the problem.
On Mon, Aug 31, 2009
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