Hema, This may work: aggregate(hema[1],hema[2],function(x)length(unique(x))) to calculate how many different websites each id visited. hema[1] is the website column, hema[2] is user_id. You can always add more index columns like days to aggregate().
Jun On Thu, Apr 2, 2009 at 11:06 PM, Hemavathi Ramulu <hema.ram...@gmail.com>wrote: > hi, > Previously my email very simple and less information. Let say I have raw > data as below:- > > user_id website time > 20 google 0930 > 21 yahoo 0935 > 20 facebook 1000 > 25 facebook 1015 > 61 google 0940 > 60 yahoo 1050 > 40 friendster 1115 > 61 google 1200 > 40 friendster 1215 > 25 google 1030 > 28 youtube 0830 > 30 facebook 0945 > > This data described about particular website viewed by particular ID in > one > day. > > My problem is how to sort the data? So that, I can get information about > one > user_id viewed how many website perday? > > secondly, I want to plotted above data where x-axis (user_id) and > y-axis(website). > > Actually, im new to R-project and still in learning process. So, I really > want you all help. > Thank you and I really appreciate everyone feedback. > > regards, > Hema. > > [[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. > -- Jun Shen PhD PK/PD Scientist BioPharma Services Millipore Corporation 15 Research Park Dr. St Charles, MO 63304 Direct: 636-720-1589 [[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.
