hi all, my data is here, -------------------------------------------------------------------------------------------------- data
clss number 1 A 1 2 B 2 3 C 3 4 A 4 5 B 5 6 C 6 7 A 7 8 B 8 9 C 9 ----------------------------------------------------------------------------------------------------- I want to this format clss number A 12 B 15 C 18 is there a way to solve this problem? -- View this message in context: http://r.789695.n4.nabble.com/To-summary-data-tp4629887.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.