Hi All, I have the data like this :
>sample <- read.csv(file="sample.csv",sep=",",header=TRUE) > sample stdate Domain sex age Login 1 01/11/09 xxx FeMale 25 2 2 01/11/09 xxx FeMale 35 4 3 01/11/09 xxx Male 18 30 4 01/11/09 xxx Male 31 3 5 02/11/09 xxx Male 32 11 6 02/11/09 xxx Male 31 1 7 02/11/09 xxx FeMale 29 1 8 02/11/09 xxx FeMale 23 5 9 03/11/09 xxx FeMale 25 9 10 03/11/09 xxx FeMale 35 6 11 03/11/09 xxx Male 18 3 12 03/11/09 xxx Male 31 0 13 04/11/09 xxx Male 32 25 14 04/11/09 xxx Male 31 1 15 04/11/09 xxx FeMale 29 0 16 01/11/09 yyy FeMale 25 2 17 01/11/09 yyy FeMale 35 4 18 01/11/09 yyy Male 18 30 19 01/11/09 yyy Male 31 3 20 02/11/09 yyy Male 32 11 21 02/11/09 yyy Male 31 1 22 02/11/09 yyy FeMale 29 1 23 02/11/09 yyy FeMale 23 5 24 03/11/09 yyy FeMale 25 9 25 03/11/09 yyy FeMale 35 6 26 03/11/09 yyy Male 18 3 27 03/11/09 yyy Male 31 0 28 04/11/09 yyy Male 32 25 29 04/11/09 yyy Male 31 1 30 04/11/09 yyy FeMale 29 0 I need to fine the average login on 01/11/09 and 02/11/09 etc... like below stdate AverageLogin 01/11/09 9.75 02/11/09 ..... 03/11/09 ....... How do I find the average Login based on date? Thanks for your time. 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.