This example illustrates a method that may do what you want. ## split a 20x5 matrix into five 4x5 matrices xmat <- matrix(1:100, nrow=20, ncol=5, byrow=TRUE) xsplit <- rep( 1:5, times= rep(4,5)) tmp <- split.data.frame(xmat,xsplit)
You will need to change xsplit to fit your dimensions. -Don -- Don MacQueen Lawrence Livermore National Laboratory 7000 East Ave., L-627 Livermore, CA 94550 925-423-1062 On 1/3/13 8:40 AM, "eliza botto" <eliza_bo...@hotmail.com> wrote: > > >Dear useRs, >i want to split a matrix having 1116rows and 12 columns. i want to split >that matrix into 36 small matrices each having 12 columns and 31 rows. >The big matrix should be splitted row wise. which means that the first >small matrix should copy values which are in first 31 rows and 12 columns >of the big matrix. similarly 2nd small matrix should contain values from >32nd to 63rd row of the big matrix and so on. on the whole i want to have >36 small matrices.i tried >dim(dd) <- c(31,12,35) >but the result are not stisfactory... >thanks in advance >elisa > [[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.
