For this, you might want to take a look at the first example in ?Reduce. HTH,
Jorge On Thu, May 21, 2009 at 11:21 AM, daniele riggi <daniele.ri...@gmail.com>wrote: > Ok, I know this waybut if i have a lot of matrix, does a function exist to > sum all of them elements by elements? > > > 2009/5/21 Jorge Ivan Velez <jorgeivanve...@gmail.com> > > >> Dear Daniele, >> Try this: >> >> A <- matrix(1:10,ncol=2) >> B <- matrix(10:20,ncol=2) >> A+B >> #[,1] [,2] >> #[1,] 11 21 >> #[2,] 13 23 >> #[3,] 15 25 >> #[4,] 17 27 >> #[5,] 19 29 >> >> HTH, >> >> Jorge >> >> >> On Thu, May 21, 2009 at 11:11 AM, daniele riggi >> <daniele.ri...@gmail.com>wrote: >> >>> Someone knows the existence of a function to sum the elements of the same >>> place A[i,j] B[i,j] of a matrix?thank you >>> >>> >>> -- >>> Dr. Daniele Riggi, PhD student >>> University of Milano-Bicocca >>> Department of Statistics >>> Building U7, Via Bicocca degli Arcimboldi, 8 >>> 20126 Milano, Italy >>> cell. +39 328 3380690 >>> mailto: daniele.ri...@gmail.com >>> >>> [[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. >>> >> >> > > > -- > Dr. Daniele Riggi, PhD student > University of Milano-Bicocca > Department of Statistics > Building U7, Via Bicocca degli Arcimboldi, 8 > 20126 Milano, Italy > cell. +39 328 3380690 > mailto: daniele.ri...@gmail.com > [[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.
