On Jul 8, 2009, at 12:11 PM, Greg Snow wrote:
Well, since we don't have Data.txt it is kind of hard for us to
replicate what you have done.
Here goes a guess as to what the problem may be.
Have you told R anywhere that S1 and S2 are factors with 6 levels
rather than numeric vectors? Or are you just hoping that the
computer can read your mind to find out this information?
(reading minds is one of the things that R and computers in general
are not very good at yet. I have made a note to my future self to
use the TimeTravel package to send a copy of the ESP package back to
my past self, but I have not received it yet).
A definite Fortunes candidate.
Marc Schwartz
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