Thanks Joshua and Berton for your pointers. Yes it was typo as I wanted to mean to select few columns.
-----Original Message----- From: Joshua Wiley [mailto:jwiley.ps...@gmail.com] Sent: 22 July 2011 22:02 To: Bogaso Christofer Cc: r-help@r-project.org Subject: Re: [R] Indexing problem with matrix On Fri, Jul 22, 2011 at 9:46 AM, Bogaso Christofer <bogaso.christo...@gmail.com> wrote: > Dear all, assume I have a matrix with just 1 row. Now suppose I want to > fetch 1st few rows from that matrix, however resulting object becomes I'm assuming you mean the first few columns. The place to look is ?"[" where you would find the drop argument. matrix(1:5, 1)[, -1, drop = FALSE] Cheers, Josh > vector. Here is 1 such example: > > > >> matrix(1:5, 1) > > [,1] [,2] [,3] [,4] [,5] > > [1,] 1 2 3 4 5 > >> > >> matrix(1:5, 1)[,-1] > > [1] 2 3 4 5 > > > > Can somebody point me how to keep resulting object as matrix with same row? > Ofcourse I again make legitimate matrix with something like as.matrix() > function. However I believe there must be some more directly way with > indexing in some better way! > > > > Thanks, > > > [[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. > -- Joshua Wiley Ph.D. Student, Health Psychology University of California, Los Angeles https://joshuawiley.com/ ______________________________________________ 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.
