[R] Extracting a particular column from list

[Rui Barradas]

Hello,

Inline.


Às 22:03 de 16/01/20, Mark Leeds escreveu:
> I nominate the last sentence of Rolf's comment as a fortune.

Second.


Rui Barradas

> 
> 
> On Thu, Jan 16, 2020 at 3:48 PM Rolf Turner <r.turner using auckland.ac.nz 
> <mailto:r.turner using auckland.ac.nz>> wrote:
> 
> 
>     On 17/01/20 1:55 am, Rui Barradas wrote:
> 
>      > Hello,
>      >
>      > What column and what list?
>      > Please post a reproducible example, see the link at the bottom of
>     this
>      > mail and  [1], [2], [3].
>      >
>      > [1] https://cran.r-project.org/web/packages/reprex/index.html
>      > [2]
>      >
>     https://stackoverflow.com/questions/5963269/how-to-make-a-great-r-reproducible-example
> 
>      >
>      > [3] https://stackoverflow.com/help/mcve
>      >
>      > Hope this helps,
> 
>     The OP should note that lists in general *do not have* columns.  Data
>     frames (which are a special case of lists) do have columns.
> 
>     Lists have "*entries*" or "components".  It is important to get your
>     terminology right and to understand the concepts that you are dealing
>     with.  Slap-dash hammer and hope is a recipe for disaster, especially
>     in R.
> 
>     cheers,
> 
>     Rolf Turner
> 
>     -- 
>     Honorary Research Fellow
>     Department of Statistics
>     University of Auckland
>     Phone: +64-9-373-7599 ext. 88276
> 
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