Jun Shen: > summarize() can apply multiple functions to one column
No, summarize() can apply multiple functions to *multiple* columns (i.e., matrices). That’s one of the advantages of summarize() over aggregate(). -- Karl Ove Hufthammer ______________________________________________ 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.