Hi! I have a list of 24 elements, all of the same type (dataframe, for example). I am looking for an alternative to mylist[[1]] + mylist[[2]] + ... + mylist[[24]] to obtain the sum. Anyone can help me? Thanks in advance. Nicola S. [[alternative HTML version deleted]]
Have a look at Reduce(), e.g.,
Reduce("+", your.list)
I hope it helps.
Best,
Dimitris
On 7/27/2010 2:36 PM, Nicola Sturaro Sommacal wrote:> Hi!
>
> I have a list of 24 elements, all of the same type (dataframe, for
example).
>
> I am looking for an alternative to mylist[[1]] + mylist[[2]] + ... +
> mylist[[24]] to obtain the sum.
>
> Anyone can help me?
>
> Thanks in advance.
>
> Nicola S.
>
> [[alternative HTML version deleted]]
>
> ______________________________________________
> R-help at r-project.org mailing list
> 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.
>
--
Dimitris Rizopoulos
Assistant Professor
Department of Biostatistics
Erasmus University Medical Center
Address: PO Box 2040, 3000 CA Rotterdam, the Netherlands
Tel: +31/(0)10/7043478
Fax: +31/(0)10/7043014
Hi, do.call(sum, mylist) ?do.call baptiste On 27 July 2010 14:36, Nicola Sturaro Sommacal <mailinglist at nicolasturaro.com> wrote:> Hi! > > I have a list of 24 elements, all of the same type (dataframe, for example). > > I am looking for an alternative to mylist[[1]] + mylist[[2]] + ... + > mylist[[24]] to obtain the sum. > > Anyone can help me? > > Thanks in advance. > > Nicola S. > > ? ? ? ?[[alternative HTML version deleted]] > > ______________________________________________ > R-help at r-project.org mailing list > 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. >