[R] lda in R vs S
Peter Dalgaard BSA
p.dalgaard at biostat.ku.dk
Fri May 7 01:08:21 CEST 1999
Prof Brian Ripley <ripley at stats.ox.ac.uk> writes:
> > >
> > > /* Sanity checks to ensure that the the answer can become */
> > > /* a data frame. Be deeply suspicious here! */
> > >
> > Deeply suspicious of what?
> Of things that look like factors? (I don't know, I didn't write this.)
I believe that is a very old comment (probably by Ross)... I think
that the point is that there are cases that are easily overlooked,
such as the fact that a "column" of a data frame can actually be a
The important thing that gets ruled out is string vectors (whether
or not that is a good idea...), which is probably exactly what Marc F.
has where he thinks he has a factor.
O__ ---- Peter Dalgaard Blegdamsvej 3
c/ /'_ --- Dept. of Biostatistics 2200 Cph. N
(*) \(*) -- University of Copenhagen Denmark Ph: (+45) 35327918
~~~~~~~~~~ - (p.dalgaard at biostat.ku.dk) FAX: (+45) 35327907
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