Have you read "An Introduction to R?" If I understand correctly, your question is very basic and suggests that you have not yet made even a minimal effort on your own to learn R before asking for help from this list.
-- Bert answer: A[C>B] On Thu, May 3, 2012 at 11:14 AM, Shankar Lanke <shankarla...@gmail.com> wrote: > 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. > -- Bert Gunter Genentech Nonclinical Biostatistics Internal Contact Info: Phone: 467-7374 Website: http://pharmadevelopment.roche.com/index/pdb/pdb-functional-groups/pdb-biostatistics/pdb-ncb-home.htm ______________________________________________ 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.
