[R] alternative to subset(dataframe, select = - column) in R

[Bert Gunter]

If you correct my typo as my followup message indicated, match() works
fine. As does logical indexing with %in%. The != version will work for
your query, but does not generalize to deleting several columns. The
point is to heed Jeff N's advice.


Bert Gunter

"The trouble with having an open mind is that people keep coming along
and sticking things into it."
-- Opus (aka Berkeley Breathed in his "Bloom County" comic strip )
On Fri, Sep 24, 2021 at 12:43 PM Luigi Marongiu
<marongiu.luigi using gmail.com> wrote:
>
> Thank you!
> ```
> new_out <- new[ , "ID" != names( new ) ]
> new[names(new) != "ID"]
> ```
> worked as wanted, `new[-match("ID"), names(new)]` gave the error:
> `Error in match("ID") : argument "table" is missing, with no default`.
> Cheers
>
> On Fri, Sep 24, 2021 at 7:33 PM Rui Barradas <ruipbarradas using sapo.pt> wrote:
> >
> > Hello,
> >
> > Like this?
> >
> >
> > mtcars[names(mtcars) != "mpg"]
> >
> >
> > Hope this helps,
> >
> > Rui Barradas
> >
> > Às 15:09 de 24/09/21, Luigi Marongiu escreveu:
> > > Hello,
> > > this is a very simple question but...
> > > what is the vector alternative to `subset(dataframe, select = - column)`?
> > > I tried with:
> > > ```
> > >> x = new[-ID]
> > > Error in `[.data.frame`(new, -ID) : object 'ID' not found
> > >> x = new[-"ID"]
> > > Error in -"ID" : invalid argument to unary operator
> > >> x = new[[-"ID"]]
> > > Error in -"ID" : invalid argument to unary operator
> > >> x = new[-["ID"]]
> > > Error: unexpected '[' in "x = new[-["
> > > ```
> > > Thank you
> > >
> > > ______________________________________________
> > > R-help using 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.
> > >
>
>
>
> --
> Best regards,
> Luigi
>
> ______________________________________________
> R-help using 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.