Hi, On Fri, Mar 2, 2012 at 3:51 PM, knavero <knav...@gmail.com> wrote: >>aggregate(z, identity, mean) > 1 2 3 4 5 > 1.0 3.0 5.0 6.0 7.5 >> aggregate(z, mean) > Error: length(time(x)) == length(by[[1]]) is not TRUE > > Can someone help me understand the error above and why "identity" is > necessary to satisfy the error
We can tell you to read ?aggregate and look at the order of the arguments. We can point out that aggregate(z, mean) is not the same as mean(z), and wonder what you are trying to accomplish with the former. We can ask for a reproducible example, and some idea of what you are trying to do. Sarah -- Sarah Goslee http://www.functionaldiversity.org ______________________________________________ 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.
