Dear Dimitris Thanks a lot.
----- Original Message ---- From: Dimitris Rizopoulos <[EMAIL PROTECTED]> To: Muhammad Azam <[EMAIL PROTECTED]> Cc: R Help <r-help@r-project.org> Sent: Tuesday, October 14, 2008 10:10:54 AM Subject: Re: [R] request: How to ignore columns having zero sums try this: x <- c(1,1,1,1,2,2,2,2,3,3,3,3,4,4,4,4,0,0,0,0,0,0,0,0); x1 <- array(x, dim=c(4,6)) ind <- colSums(x1) != 0 x1[, ind] I hope it helps. Best, Dimitris Muhammad Azam wrote: > Dear friends > I have an array consist of r-rows and c-columns e.g. > x=c(1,1,1,1,2,2,2,2,3,3,3,3,4,4,4,4,0,0,0,0,0,0,0,0); > x1=array(x, dim=c(4,6)) > output is >> x1 > [,1] [,2] [,3] [,4] [,5] [,6] > [1,] 1 2 3 4 0 0 > [2,] 1 2 3 4 0 0 > [3,] 1 2 3 4 0 0 > [4,] 1 2 3 4 0 0 > How can i ignore columns having zero sums? Help in this regard is needed. > Thanks > > > M.Azam > > > > [[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. > -- Dimitris Rizopoulos Assistant Professor Department of Biostatistics Erasmus Medical Center Address: PO Box 2040, 3000 CA Rotterdam, the Netherlands Tel: +31/(0)10/7043478 Fax: +31/(0)10/7043014 [[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.