[R] ncol() vs. length() on data.frames
c@|@ndr@ @end|ng |rom rgzm@de
Tue Mar 31 15:32:24 CEST 2020
I know that, but that doesn't really answer my question, does it?
Dr. Ivan Calandra
TraCEr, laboratory for Traceology and Controlled Experiments
MONREPOS Archaeological Research Centre and
Museum for Human Behavioural Evolution
56567 Neuwied, Germany
+49 (0) 2631 9772-243
On 31/03/2020 15:26, Eric Berger wrote:
> A data frame is a special case of a list. It is a list of its columns.
> > is.list( your_data_frame )
> # TRUE
> On Tue, Mar 31, 2020 at 4:04 PM Ivan Calandra <calandra using rgzm.de
> <mailto:calandra using rgzm.de>> wrote:
> Dear useRs,
> I have a very simple question:
> On a simple data.frame (i.e. each element is a vector), ncol() and
> length() will give the same result.
> Are they just equivalent on such objects, or are they differences in
> some cases?
> Is one of them to be preferred for whatever reason?
> Thanks you,
> Dr. Ivan Calandra
> TraCEr, laboratory for Traceology and Controlled Experiments
> MONREPOS Archaeological Research Centre and
> Museum for Human Behavioural Evolution
> Schloss Monrepos
> 56567 Neuwied, Germany
> +49 (0) 2631 9772-243
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