[R] Subsetting a data.frame degenerates at one column?
Allen S. Rout
asr at ufl.edu
Mon Feb 11 21:27:07 CET 2008
"jim holtman" <jholtman at gmail.com> writes:
> try:
> input[,targets, drop=FALSE]
> see:
> ?"["
> for an explanation.
Thanks, you who responded; this was exactly helpful, and a good
reference to the part of the FM I was missing. To unpack (and
demonstrate some comprehension gained.. ;) the subsetting operations
on data frames, by default, use the most basic data type capable of
representing the answer.
Either the drop=FALSE or the inputs[targets] solution give me the
result I had in mind. I mildly prefer the [targets] statement from a
visual perspective.
- Allen S. Rout
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