Do we need an "Obfuscated R" contest? On Tue, Jun 5, 2012 at 8:17 AM, Uwe Ligges <lig...@statistik.tu-dortmund.de> wrote: > > > On 05.06.2012 00:36, Erdal Karaca wrote: >> >> Thanks all, that worked! >> >> Yes, it should be >> for (i in 1:length(a)) a[i]<- scalar * a[i] * i >> >> And now is... >> >> a<- a * scalar * seq_along(a) >> >> That is almost as cool as the PERL programming language :-) > > > > Almost? > > Uwe Ligges > > > > >> 2012/6/4 Rui Barradas<ruipbarra...@sapo.pt> >> >>> Hello, >>> >>> Just learning the alphabet? If yes, there's a difference between 'v' and >>> 'a'. >>> >>> Now more seriously. Your description and your loop don't do the same. >>> >>> Description: >>> vm<- scalar * v * seq_along(v) >>> >>> Loop: >>> a<- scalar * a >>> >>> Also, seq_along is the way to do it, it works even if length(a) == 0. >>> >>> Hope this helps, >>> >>> Rui Barradas >>> >>> Em 04-06-2012 21:25, Erdal Karaca escreveu: >>> >>>> (Just learning R) >>>> >>>> I have this vector: >>>> >>>> v<- c(1:10) >>>> >>>> Now, I want to multiply each element of that vector with a scalar value >>>> multiplied with its index: >>>> >>>> vm<- v * scalar * indexOfCurrentElementOf_v >>>> >>>> Is that possible without using a loop? >>>> >>>> In a loop I would do this: >>>> >>>> for (i in 1:length(a)) a[i]<- scalar * a[i] >>>> >>>> [[alternative HTML version deleted]] >>>> >>>> ______________________________________________ >>>> 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. >>>> >>> >> >> [[alternative HTML version deleted]] >> >> ______________________________________________ >> 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. > > > ______________________________________________ > 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.
-- Jim Holtman Data Munger Guru What is the problem that you are trying to solve? Tell me what you want to do, not how you want to do it. ______________________________________________ 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.
