Dear R-helpers, I have got a vector which looks like the following: apkz <- c(1,2,3,4,5,6,1,1,2,1,2,3,4) now I am trying to find a way to automatically create several vectors, each starting with the number 1, namely: First vector 1 2 3 4 5 6 Second vector 1 Thrid vector 1 2 Fourth vector 1 2 3 4 Does anyone know how to do that? Thank you very much for your help in advance! Marion [[alternative HTML version deleted]]
Hi,
This piece of R code does the trick:
do.call("c", sapply(c(6,1,2,4), seq, from = 1))
regards,
Paul
On 02/06/2012 11:15 AM, Marion Wenty wrote:> Dear R-helpers,
>
>
> I have got a vector which looks like the following:
>
>
> apkz <- c(1,2,3,4,5,6,1,1,2,1,2,3,4)
>
>
> now I am trying to find a way to automatically create several vectors,
> each starting with the number 1, namely:
>
>
> First vector
>
> 1 2 3 4 5 6
>
>
> Second vector
>
> 1
>
> Thrid vector
>
> 1 2
>
> Fourth vector
>
> 1 2 3 4
>
>
> Does anyone know how to do that?
>
>
> Thank you very much for your help in advance!
>
>
> Marion
>
> [[alternative HTML version deleted]]
>
> ______________________________________________
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> PLEASE do read the posting guide
http://www.R-project.org/posting-guide.html
> and provide commented, minimal, self-contained, reproducible code.
--
Paul Hiemstra, Ph.D.
Global Climate Division
Royal Netherlands Meteorological Institute (KNMI)
Wilhelminalaan 10 | 3732 GK | De Bilt | Kamer B 3.39
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tel: +31 30 2206 494
http://intamap.geo.uu.nl/~paul
http://nl.linkedin.com/pub/paul-hiemstra/20/30b/770
Hi> > Dear R-helpers, > > > I have got a vector which looks like the following: > > > apkz <- c(1,2,3,4,5,6,1,1,2,1,2,3,4) > > > now I am trying to find a way to automatically create several vectors, > each starting with the number 1, namely: > > > First vector > > 1 2 3 4 5 6 > > > Second vector > > 1 > > Thrid vector > > 1 2 > > Fourth vector > > 1 2 3 4 > > > Does anyone know how to do that?This came to my mind as first, but I believe there are other options. split(apkz, cumsum(apkz==1)) Regards Petr> > > Thank you very much for your help in advance! > > > Marion > > [[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 guidehttp://www.R-project.org/posting-guide.html> and provide commented, minimal, self-contained, reproducible code.