thanks rui!! how can it be that you advise something and it doesn't work :)
eliza > Date: Tue, 27 Nov 2012 18:14:41 +0000 > From: ruipbarra...@sapo.pt > To: eliza_bo...@hotmail.com > CC: r-help@r-project.org > Subject: Re: [R] loop command to matrix > > Hello, > > Try > > x <- matrix(1:18, ncol = 6) > sapply(seq_len(ncol(x)), function(i) x[, i] - rowMeans(x[, -i])) > > > Hope this helps, > > Rui Barradas > Em 27-11-2012 17:51, eliza botto escreveu: > > Dear UseRs,Extremely sorry for a basic question. I have a matrix of 19 rows > > and 365 columns. what i want to do is the following...First i want to leave > > out column number 1 and want to calculate the row wise mean of the > > remaining columns, which will obviously give me 365 values in one column, > > and then subtracting these values from the column i left out i.e. col=1 > > then i want to leave out column 2 and calculate the row wise mean of the > > remaining columns which includes column 1 too and then subtracting these > > values from the column i left out i.e. col=2.and then continuing this > > process the last column. i know a kind of "manual way" of doing things but > > its extremely long and laborious.Is there any loop command or shorter way?? > > thanks in advanceregardseliza > > [[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.
