Hi, Try: data.frame(table(dat$Date)) A.K.
Hi guys, I have some 20,000 observations like this: Date 2014-01-01 00:00:00 2014-01-02 11:00:00 2014-01-02 22:00:00 2014-01-03 03:00:00 I want to perform an hourly count (e.g. the frequency occur at each hour for a specific date) so the result would look like this: Date Frequency 2014-01-01 00:00:00 1 2014-01-01 01:00:00 1 2014-01-01 02:00:00 1 2014-01-01 03:00:00 1 Any suggestions? Thanks! ______________________________________________ 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.
