[R] ncol() vs. length() on data.frames

[Ivan Calandra]

Thanks Eric,

I know that, but that doesn't really answer my question, does it?

Ivan

--
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
https://www.researchgate.net/profile/Ivan_Calandra

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,
>     Ivan
>
>     -- 
>     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
>     https://www.researchgate.net/profile/Ivan_Calandra
>
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