[R] Warning: as.numeric reorders factor data

ripley@stats.ox.ac.uk ripley at stats.ox.ac.uk
Sun Dec 8 17:34:03 CET 2002


On Sun, 8 Dec 2002, Bud Gibson wrote:

> Thanks for the clarification.  It's nice to know that there is some
> systematicity to the behavior.
>
> Is this documented anywhere?  I did look at the help for as.numeric, and

Yes, in the FAQ no less, Q7.12 in the version I have:

   ``In any case, do not call `as.numeric()' or their likes directly.''


Ouch....

-- 
Brian D. Ripley,                  ripley at stats.ox.ac.uk
Professor of Applied Statistics,  http://www.stats.ox.ac.uk/~ripley/
University of Oxford,             Tel:  +44 1865 272861 (self)
1 South Parks Road,                     +44 1865 272860 (secr)
Oxford OX1 3TG, UK                Fax:  +44 1865 272595




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