You do not seem to have suppied either code nor data. Please supply both. John Kane Kingston ON Canada
> -----Original Message----- > From: shankarla...@gmail.com > Sent: Wed, 2 May 2012 22:06:54 -0400 > To: r-help@r-project.org > Subject: [R] Identifying the particular X or Y in a sorted list > > Dear All, > > I have a data sets as shown below A (Patient ID ), B and C are the > Concentration of drug in blood on day 1 and day 4, D is the difference in > conc. To do this in R I have written a code as follows, identified the > number of patients who have more concentration on day 4 . Here I want to > identify specifically the patient ID (is he patient 1 or 2 or 5 and 7), > whose concentration is more. > How to write a code to get the list of A (patient ID whose difference is > more on day 4). > > Data<-(myDf$B-myDf$C) > sum(Data>0) > > A B CD (B-C) 1 14 10 4 2 12 7 5 3 11 15 -4 4 8 3 5 5 1 8 -7 > > I appreciate your help, thank you very much in advance. > > Regards > > [[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. ____________________________________________________________ GET FREE SMILEYS FOR YOUR IM & EMAIL - Learn more at http://www.inbox.com/smileys Works with AIM®, MSN® Messenger, Yahoo!® Messenger, ICQ®, Google Talk™ and most webmails ______________________________________________ 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.