search for: ordini2008_ex

...t 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.