Thank you very much Michael. This is very helpful. However, if there is any way to exclude zero length bins. Lets imagine that the matrix was as follows -
a <- data.frame(patient=1:7, charges=c(100,500,200,90,400,500,600), age=c(0,3,5,7,10,16,19), spending=c(10, 60, 110, 200, 400, 450, 500)) bins <- split(a, cut(a$spending, breaks = (0:5)*100) then bins[3] = $`(200,300]` [1] patient charges age spending <0 rows> (or 0-length row.names) Is there a way to exclude this? Priya On Mon, Dec 5, 2011 at 3:43 PM, R. Michael Weylandt < michael.weyla...@gmail.com> wrote: > Just a clarification: I can't get round to work as I first expected so > if you want to do bins by 100's you'd probably want: > > split(a, cut(a$spending, breaks = (0:5)*100)) > > Michael > > On Mon, Dec 5, 2011 at 3:41 PM, R. Michael Weylandt > <michael.weyla...@gmail.com> wrote: > > I'd so something like > > > > split(a, a$spending) > > > > and you can include a round(a$spending, -2) or something similar if > > you want to group by the 100's. > > > > Michael > > > > On Mon, Dec 5, 2011 at 3:37 PM, Diviya Smith <diviya.sm...@gmail.com> > wrote: > >> Hello there, > >> > >> I have a matrix with some data and I want to split this matrix based on > the > >> values in one column. Is there a quick way of doing this? I have looked > at > >> cut but I am not sure how to exactly use it? > >> for example: > >> > >> I would like to split the matrix "a" based on the spending such that the > >> data is binned groups [0..99],[100..199]...and so on. > >> > >> a <- data.frame(patient=1:7, charges=c(100,500,200,90,400,500,600), > >> age=c(0,3,5,7,10,16,19), spending=c(10, 60, 110, 200, 250, 400, 450)) > >> > >> Expected output - > >> bin[1] <- c(10, 60) > >> bin[2] <- c(110, 200, 250) > >> bin[3] <- c(400, 450) > >> > >> NOTE that the number of data points in each bin is not the same and the > >> empty bins are removed (since there are no points between [199..299], > >> bin[3] starts at 400. > >> > >> Any help would be most appreciated. Thank you in advance. > >> > >> Diviya > >> > >> [[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. > [[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.
