I have the data like this: > dummy State Months No 1 xxx Jan 1 2 xxx Jan 2 3 xxx Jan 1 4 yyy Jan 1 5 yyy Jan 2 6 yyy Jan 1 7 zzz Jan 3 8 zzz Jan 1 9 zzz Jan 2 10 xxx Feb 3 11 xxx Feb 4 12 xxx Feb 2 13 yyy Feb 1 14 yyy Feb 2 15 yyy Feb 1 16 zzz Feb 2 17 zzz Feb 3 18 zzz Feb 3
I want for a month Jan how many count(row) is there for xxx and yyy.some thing like this: State Jan Feb Mar xxx 3 3 yyy 3 3 zzz 3 3 Any clue will be greatly appreciated Thanks & Rg Mohan L [[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.