Hi, I ve been searching a lot in internet..but I can t find a solution Attached, you find a file. I need for each (Materiale, tpdv, UM) to find sum,avg and count My idea was to aggregate for the 3 parameters ..but I don t know how to get the numeric value (SUM,COUNT,AVG) I need. Can you help me? thank you
http://www.nabble.com/file/p22905322/ordini2008_ex.txt ordini2008_ex.txt -- View this message in context: http://www.nabble.com/SUM%2CCOUNT%2CAVG-tp22905322p22905322.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.
