Hi Stavros, > I think we're talking past each other on the question of the semantics > of formula operators, and it's probably not productive to continue. I > would guess that the underlying issue is that we come from different > communities, and so have different background assumptions. Perhaps > it's the old MIT vs New Jersey story > (http://www.jwz.org/doc/worse-is-better.html) -- after all, S/R does > come out of the Bell Labs community, and I was in the MIT Lisp > community many decades ago....
I think the simple answer is that there are no general function semantics. Knowing what + does gives you no insight into what * does. Know what * does, gives you no insight into what / does. There is no algebra that unifies the operators. Hadley -- http://had.co.nz/ ______________________________________________ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
