Is this what you want:
> l <- list(a=NA, b=NA)
> names(l) <- paste("new_", names(l), sep='')
> l
$new_a
[1] NA
$new_b
[1] NA
>
On Fri, Jan 1, 2010 at 9:48 AM, Mark Heckmann <mark.heckm...@gmx.de> wrote:
> Hi David,
>
> thanks for the answer, though I am not sure what you mean.
> My aim is the following out:
>
> input to lapply
>
> > l
> $a
> [1] NA
>
> $b
> [1] NA
>
> output from lapply:
> > l
> $new_b
> [1] NA
>
> $new_b
> [1] NA
>
> Mark
>
>
> Am 01.01.2010 um 14:58 schrieb David Winsemius:
>
> >
> > On Jan 1, 2010, at 8:21 AM, Mark Heckmann wrote:
> >
> >> Happy New Year, all!
> >>
> >> I want to do calculations on each element of a list l, but i want
> >> the returned list element to be named differently after the
> >> calculation.
> >> Is it possible to do the renaming somehow within the lapply call?
> >>
> >> l <- list(a=NA, b=NA)
> >> lapply(l, function(x) {names(x) <- "new name"; return(x) })
> >>
> >> This does not work, any ideas?
> >
> > It did "work" in the sense that it created a list of the same
> > structure with each node now named "new name". If you want that
> > named list to become "l", then you need to do an assignment:
> >
> > l <- lapply(l, function(x) {names(x) <- "new name"; return(x) })
> > > l
> > $a
> > new name
> > NA
> >
> > $b
> > new name
> > NA
> >
> >
> >
> > --
> > David.
> >
> >> TIA
> >>
> >>
> >> Mark Heckmann
> >> Dipl. Wirt.-Ing. cand. Psych.
> >> Vorstraße 93 B01
>
>
> Mark Heckmann
> Dipl. Wirt.-Ing. cand. Psych.
> Vorstraße 93 B01
> 28359 Bremen
> Blog: www.markheckmann.de
> R-Blog: http://ryouready.wordpress.com
>
>
>
>
>
> [[alternative HTML version deleted]]
>
>
> ______________________________________________
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> PLEASE do read the posting guide
> http://www.R-project.org/posting-guide.html<http://www.r-project.org/posting-guide.html>
> and provide commented, minimal, self-contained, reproducible code.
>
>
--
Jim Holtman
Cincinnati, OH
+1 513 646 9390
What is the problem that you are trying to solve?
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