Hi all, I have a set of data in hourly time steps with each row identified as time data column1 data column2 1 9999 9999 1.042 9999 9999 1.083 9999 9999 1.125 9999 9999 1.167 9999 9999 1.208 9999 9999 1.25 9999 9999.....and so on (the time column is in fractions of a day)
I want to be able to group the data by day. I managed to do this using: Day1H = hourlydata[c(1:24),] but I'd like to be able to create groups for each day without doing this manually for each set of 24 rows. Any suggestions greatly appreciated Thanks -- View this message in context: http://n4.nabble.com/Grouping-rows-of-data-by-day-tp2016063p2016063.html Sent from the R help mailing list archive at Nabble.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.