[R] "Copy-pastable" output of 1000 plus variables

[BR_email]

David:
I cannot demonstrate _with_ _code_ , otherwise I would not have a 
problem. However, I can illustrate:
In SAS, I can run Proc SQL for a dump, VARLIST_IS_HERE, showing on the 
computer screen the variables, e.g., ID, X1, X2, X3, ..., X1000,
  that I can copy and paste into the editor window (e.g., R Source 
window) to easily select which variables among the big data of today
I want keep.


  

David Winsemius wrote:
> It would be best if you could demonstrate _with_ _code_ the sort of operation you propose.
>
> David
>
> Sent from my iPhone
>
>> On Apr 23, 2017, at 1:07 PM, Bruce Ratner PhD <br at dmstat1.com> wrote:
>>
>> R-helpers:
>> I'm reading "Advanced R" (Wickham), which provides his way, quoted below, of keeping variables. This cherry-picking approach clearly is not practical with a large dataset.
>>
>> "If you know the columns you don’t want, use set operations to work out which colums to keep: df[setdiff(names(df), "z")]"
>>
>> I'm looking for a way of producing an output of 1000 plus variables, such that I can get a clean listing of variables, not like from st(), that are easily copy-pastable for selecting the variables I want to keep.
>>
>> Any suggestion is appreciated.
>> Thanks.
>> Bruce
>>
>> ______________________________________________
>> R-help at r-project.org mailing list -- To UNSUBSCRIBE and more, see
>> https://stat.ethz.ch/mailman/listinfo/r-help
>> PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
>> and provide commented, minimal, self-contained, reproducible code.
>
>
>