Add the drop = TRUE command to split ?split split(a, cut(a$spending, breaks = (0:5)*100), drop = TRUE)
Michael On Mon, Dec 5, 2011 at 4:06 PM, Diviya Smith <diviya.sm...@gmail.com> wrote: > Thank you very much Michael. This is very helpful. However, if there is any > way to exclude zero length bins. Lets imagine that the matrix was as follows > - > > a <- data.frame(patient=1:7, charges=c(100,500,200,90,400,500,600), > age=c(0,3,5,7,10,16,19), spending=c(10, 60, 110, 200, 400, 450, 500)) > > bins <- split(a, cut(a$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. > > ______________________________________________ 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.
