FYI below. On Fri, Jun 22, 2012 at 4:00 PM, Luba G <lubaglouk...@gmail.com> wrote:
> Thanks Rui! > I was not aware that *number*L is an alternate to as.integer(*number*). > Luba > > > identical(2,as.integer(2)) [1] FALSE > identical(2L,as.integer(2)) [1] TRUE Cheers, Bert > On Fri, Jun 22, 2012 at 3:53 PM, Rui Barradas <ruipbarra...@sapo.pt> > wrote: > > > Hello, > > > > 2L is an integer, 2 might be or not. In the case of apply(), there is no > > difference. > > > > All possible values for margin? Any possible(*) combination of the > > dimensions of 'x' in > > > > apply(x, margin, function) > > > > (*) non-null. If, say, x <- array(0, dim=c(2,3,4)) (3dim) then you can > > call any of > > > > apply(x, 1, fun) or apply(x, 2, fun) or apply(x, 3, fun) but not > margin=4; > > apply(x, 1:2, fun) or apply(x, c(1, 3), fun) or ... > > apply(x, 1:3, fun) > > > > Hope this helps, > > > > Rui Barradas > > > > Em 22-06-2012 23:23, Luba G escreveu: > > > >> What is the difference of using 2L versus 2 as the margin argument in > the > >> apply() function? Where can I find detailed information on all of the > >> possible margin arguments? > >> > >> x > >>> > >> [,1] [,2] > >> [1,] 1 2 > >> [2,] 3 4 > >> [3,] 5 6 > >> [4,] 7 8 > >> [5,] 9 10 > >> > >>> sqrt(apply(x, *2L*, function(r.st) var(r.st[!is.na(r.st)]))) > >>> > >> [1] 3.162278 3.162278 > >> > >>> sqrt(apply(x,* 2*, function(r.st) var(r.st[!is.na(r.st)]))) > >>> > >> [1] 3.162278 3.162278 > >> > >> [[alternative HTML version deleted]] > >> > >> ______________________________**________________ > >> R-help@r-project.org mailing list > >> https://stat.ethz.ch/mailman/**listinfo/r-help< > https://stat.ethz.ch/mailman/listinfo/r-help> > >> PLEASE do read the posting guide http://www.R-project.org/** > >> posting-guide.html <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. > -- Bert Gunter Genentech Nonclinical Biostatistics Internal Contact Info: Phone: 467-7374 Website: http://pharmadevelopment.roche.com/index/pdb/pdb-functional-groups/pdb-biostatistics/pdb-ncb-home.htm [[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.
