No problem. Actually, I missed a comma. You should do A[,seq(1,dim(A)[2],2)]
Julian affy snp wrote: > Hi Julian, > > Thanks for the help! > > Best, > Allen > > > > On Nov 9, 2007 11:08 PM, Julian Burgos <[EMAIL PROTECTED]> wrote: > >> There are many ways. For example, you can do something like >> >> A[seq(1,dim(A)[2],2)] >> >> Julian >> >> Julian M. Burgos >> >> Fisheries Acoustics Research Lab >> School of Aquatic and Fishery Science >> University of Washington >> >> 1122 NE Boat Street >> Seattle, WA 98105 >> >> Phone: 206-221-6864 >> >> >> >> >> affy snp wrote: >> >>> Dear List, >>> >>> Hi! I am wondering what is the simplest way to subset a portion of columns >>> from a matrix. >>> >>> For example, there is a matrix A (238,304*243). What is the simplest >>> way to get a sub-matrix B which comprises of column 1, 3, 5, 7,9,...(odd >>> column >>> number) from matrix A? >>> >>> Thank you very much for your help! >>> >>> Best, >>> Allen >>> >>> ______________________________________________ >>> 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. >>> >>> >> >> >> -- Julian M. Burgos Fisheries Acoustics Research Lab School of Aquatic and Fishery Science University of Washington 1122 NE Boat Street Seattle, WA 98105 Phone: 206-221-6864 ______________________________________________ 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.
