a <- c( 20071031,20071130, 20071231) sort(a) Or if you want convert to date: sort(strptime(a, '%Y%m%d'))
Okay, but what if you have information in the other columns? For example: 20071031 information info 20071130 information info 20071231 information info Etc. Thanks. Leigh ________________________________ From: Henrique Dallazuanna [mailto:www...@gmail.com] Sent: Monday, August 02, 2010 8:12 PM To: Leigh E. Lommen Cc: r-help@r-project.org Subject: Re: [R] sorting by date a <- c( 20071031,20071130, 20071231) sort(a) Or if you want convert to date: sort(strptime(a, '%Y%m%d')) On Mon, Aug 2, 2010 at 9:03 PM, Leigh E. Lommen <leigh.lom...@courtesycorporation.com> wrote: I am unsure how to sort a column by date if it is currently in the form: YYYYMMDD For example the months: 20071031 20071130 20071231 Etc. Regards, Leigh [[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. -- Henrique Dallazuanna Curitiba-Paraná-Brasil 25° 25' 40" S 49° 16' 22" O [[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.
