Dear All, Thank you very much in advance. 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).
A 1 2 3 4 5 B 7 2 3 6 9 C 4 6 9 2 5 (B-C) 3 -4 -6 4 4 DF1<-list(A,B,C) DF1 DF2<-(DF1$C-DF1$B) length(DF2) sum(DF2>0) #I want to subtract B from C to see and identify how many patients have greater concentrations and who are these patients (A). On Thu, May 3, 2012 at 12:15 PM, John Kane <jrkrid...@inbox.com> wrote: > 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 > > > -- Regards, Shankar Lanke Ph.D. Assistant Professor Department of Pharmaceutical Sciences College of Pharmacy The University of Findlay (C) 678-232-3567 (O) 419-434-5448 Fax# 419-434-4390 [[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.
