Yes, except that patients have different cycle numbers. Such as, one might have cycle 1,2,3, and another has 1,4,12. On Jun 6, 2012 12:54 PM, "arun" <smartpink...@yahoo.com> wrote:
> Hi Iglucia, > > I am not sure how your dataset looks like. Does it look similar to this: > > > dat4<-data.frame(patient=rep(c(1:10), > rep(3,10)),var=rep(c("cycle0","cycle1","cycle2"),rep(1,3)),value=c(rnorm(15,1,0.5),NA,rnorm(5,1,0.5),NA,rnorm(8,1,0.5))) > > dat4 > patient var value > 1 1 cycle0 1.8826827 > 2 1 cycle1 1.0316985 > 3 1 cycle2 1.0084754 > 4 2 cycle0 1.1822553 > 5 2 cycle1 1.5494087 > 6 2 cycle2 0.9173749 > 7 3 cycle0 0.3935503 > 8 3 cycle1 0.7012282 > 9 3 cycle2 0.5213031 > 10 4 cycle0 0.8330390 > 11 4 cycle1 0.6430550 > 12 4 cycle2 0.7751283 > 13 5 cycle0 1.4092714 > 14 5 cycle1 0.8120330 > 15 5 cycle2 0.6255491 > 16 6 cycle0 NA > 17 6 cycle1 0.1068520 > 18 6 cycle2 0.7556006 > 19 7 cycle0 1.4322698 > 20 7 cycle1 1.6109262 > 21 7 cycle2 0.9650534 > 22 8 cycle0 NA > 23 8 cycle1 0.3861208 > 24 8 cycle2 1.1349206 > 25 9 cycle0 1.5659958 > 26 9 cycle1 1.8725942 > 27 9 cycle2 1.5676570 > 28 10 cycle0 1.0895054 > 29 10 cycle1 1.1941775 > 30 10 cycle2 1.3932515 > > > > > > A.K. > > > > > > > ----- Original Message ----- > From: lglucia <libgray3...@gmail.com> > To: r-help@r-project.org > Cc: > Sent: Wednesday, June 6, 2012 12:07 AM > Subject: [R] Combine subsets by factor level > > I'm attempting to change a data set by compressing rows into columns. > Currently there are several rows that all have information about one > "patient," but at different cycles. I'm trying to make each patient only > have one row in the data set. > > Does anyone know a good way to combine data sets by factor level? I've > separated the groups into different subsets by cycle, but not every patient > has data for every cycle (i.e. there are 1200 who have cycle 0, but only > 200 > of those have a cycle 1, and a different number have cycles higher than > that, etc). I then made the patient number the identifying label. If there > is a way to column-combine these subsets by the factor level of these > patient names, and leave any patients that are missing a cycle as NA? > > If anyone has insight on how to do this, or a better way to complete what > I'm trying to do, I'd appreciate it! > > -- > View this message in context: > http://r.789695.n4.nabble.com/Combine-subsets-by-factor-level-tp4632472.html > Sent from the R help mailing list archive at Nabble.com. > > ______________________________________________ > 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. > > [[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.