Rui Barradas
2021-Sep-24 17:33 UTC
[R] alternative to subset(dataframe, select = - column) in R
Hello, Like this? mtcars[names(mtcars) != "mpg"] Hope this helps, Rui Barradas ?s 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 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. >
Luigi Marongiu
2021-Sep-24 19:39 UTC
[R] alternative to subset(dataframe, select = - column) in R
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 at sapo.pt>
wrote:>
> Hello,
>
> Like this?
>
>
> mtcars[names(mtcars) != "mpg"]
>
>
> Hope this helps,
>
> Rui Barradas
>
> ?s 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 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.
> >
--
Best regards,
Luigi