Your question is ambiguous -- at least to me. The posting guide: http://www.r-project.org/posting-guide.html
suggests that examples can be helpful to explain what you want. From the main statement I think the answer might be: mymatrix[seq(1, nrow(mymatrix), by=8), ] From the 'i.e.' clause I'm thinking: mymatrix[1:8, ] On 27/03/2010 06:20, leobon wrote:
Hello everyone, I have a matrix with 8000 rows. If I want to select every 8 rows, (i.e. row1, row2, ..., row8), what should I do? Appriciate for any hints! Thanks a lot! Leo
-- Patrick Burns pbu...@pburns.seanet.com http://www.burns-stat.com (home of 'Some hints for the R beginner' and 'The R Inferno') ______________________________________________ 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.
