[R] Selecting first 7 elements

[Kang Min]

Hmm x[8:14] didn't work. Yes Iverson's method worked, I wanted the
whole list, with 7 elements in each vector.

Now I want the whole list as well, but with the 8th to 14th element.


On May 30, 7:47 pm, David Winsemius <dwinsem... at comcast.net> wrote:
> On May 29, 2010, at 11:37 PM, Kang Min wrote:
>
> > What if I want to select the 8th to 14th element of the list? I tried
> > to use "[" again, but it doesn't work.
>
> x[8:14]
>
> (And I could not get Iverson's earlier method to work properly on a  
> long list. It just returned the whole list. Did it work properly for  
> you? )
>
> --
> David.
>
>
>
>
>
>
>
> >>>> "[" is a function, and you want to use it on each element of the  
> >>>> list,
> >>>> so...
>
> >>>> lapply(x, "[", c(1:7))
>
> >>> and the call to c() is of course not necessary, since ":" will  
> >>> generate a vector.
>
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>
> David Winsemius, MD
> West Hartford, CT
>
> ______________________________________________
> R-h... at r-project.org mailing listhttps://stat.ethz.ch/mailman/listinfo/r-help
> PLEASE do read the posting guidehttp://www.R-project.org/posting-guide.html
> and provide commented, minimal, self-contained, reproducible code.