# [R] Partition a vector into select groups with fixed length

Bert Gunter bgunter@4567 @end|ng |rom gm@||@com
Sun Aug 18 21:08:03 CEST 2019

```Perhaps simpler:
Hint:  (seq_along(LETTERS) -1) %/% 5
## modular arithmetic can be useful for this sort of thing

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 Sun, Aug 18, 2019 at 11:47 AM Gerrit Eichner <
gerrit.eichner using math.uni-giessen.de> wrote:

> Hi, Christofer,
>
> try something along
>
> len <- 5
> split(Vec, rep(seq(ceiling(length(Vec)/len)), each = len))
>
>   Hth  --  Gerrit
>
> ---------------------------------------------------------------------
> Dr. Gerrit Eichner                   Mathematical Institute, Room 212
> gerrit.eichner using math.uni-giessen.de   Justus-Liebig-University Giessen
> Tel: +49-(0)641-99-32104          Arndtstr. 2, 35392 Giessen, Germany
> Fax: +49-(0)641-99-32109            http://www.uni-giessen.de/eichner
> ---------------------------------------------------------------------
>
> Am 18.08.2019 um 20:01 schrieb Christofer Bogaso:
> > Hi,
> >
> > Let say I have a vector as below
> >
> > Vec = LETTERS
> >
> > Now I want to break this vector into groups of the same length of 5.
> >
> > So,
> > 1st group consists - "A" "B" "C" "D" "E"
> > 2nd group - "F" "G" "H" "I" "J"
> >
> > and so on..
> > last group will consist only the leftover elements
> >
> > I have a very large initial vector, so looking for some efficient way
> > to achieve the same. Any pointer will be highly appreciated.
> >
> > Thanks for your time.
> >
> > ______________________________________________
> > R-help using r-project.org mailing list -- To UNSUBSCRIBE and more, see
> > https://stat.ethz.ch/mailman/listinfo/r-help
> http://www.R-project.org/posting-guide.html
> > and provide commented, minimal, self-contained, reproducible code.
> >
>
> ______________________________________________
> R-help using r-project.org mailing list -- To UNSUBSCRIBE and more, see
> https://stat.ethz.ch/mailman/listinfo/r-help