Extracting a particular column from list

Hello,

Inline.


?s 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 at auckland.ac.nz
<mailto:r.turner at 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