[R] Column naming mystery

Werner Wernersen pensterfuzzer at yahoo.de
Mon Aug 27 15:21:10 CEST 2007

Sorry that the problem description was not sufficient.
Here is a self-contained code replicating the problem:

x <-

What surprises me are the zeros in the resulting
total.sum column. The problem remains if total.inf is
renamed to totalinf or total_inf but not if renamed to
ttotal.inf .

Can anyone explain to me what the rules for naming
columns are so that I can avoid such mistakes in the

Thanks a lot!


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