Try this: head(vec, sum(cumprod(vec)))
The positions: which(head(vec, sum(cumprod(vec)))) On Mon, Nov 9, 2009 at 4:44 PM, Grzes <gregori...@gmail.com> wrote: > > Hi ! > I have a vector: > vec= TRUE TRUE TRUE TRUE FALSE FALSE FALSE FALSE TRUE TRUE FALSE > and I'm looking for a method which let me get only the first values equal > TRUE from this vector. It means that I want to get a vector: > vec_out = TRUE TRUE TRUE TRUE > > or posictions values = TRUE: vec_out = 1,2,3,4 > -- > View this message in context: > http://old.nabble.com/Find-the-first-values-in-vector-tp26271555p26271555.html > Sent from the R help mailing list archive at Nabble.com. > > ______________________________________________ > R-help@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. > -- Henrique Dallazuanna Curitiba-Paraná-Brasil 25° 25' 40" S 49° 16' 22" O ______________________________________________ R-help@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.
