These will be overlapping subgroups from the same data frame. For example, d<=2 will have length=9, d<=4 will have length=7, etc.
Ken kmna...@gmail.com 914-450-0816 (tel) 347-730-4813 (fax) > On May 25, 2016, at 9:06 PM, William Dunlap <wdun...@tibco.com> wrote: > > Just to be clear, do you really want your 'condition' groups to be be subsets > of one another? Most (all?) of the *ply functions assume you want > non-overlapping groups so they do a split-summarize-combine sequence. > You would have to replace the split part of that. > > Bill Dunlap > TIBCO Software > wdunlap tibco.com <http://tibco.com/> > On Wed, May 25, 2016 at 3:37 PM, KMNanus <kmna...@gmail.com > <mailto:kmna...@gmail.com>> wrote: > I have a large dataset, a sample of which is: > > a<- c(“A”, “B”,“A”, “B”,“A”, “B”,“A”, “B”,“A”, “B”) > b <-c(15, 35, 20, 99, 75, 64, 33, 78, 45, 20) > c<- c( 111, 234, 456, 876, 246, 662, 345, 480, 512, 179) > d<- c(1.1, 3.2, 14.2, 8.7, 12.5, 5.9, 8.3, 6.0, 2.9, 9.3) > > df <- data.frame(a,b,c,d) > > I’m trying to construct a data frame that shows the means of c & b based on > the condition of d and grouped by a. > > I want to create the data frame below, then use ggplot2 to create a line plot > of b at various conditions of d. > > I can compute the grouped means (d>=2, d>=4, etc.) one at a time using dplyr > but haven’t figured out how to put them all together or put them in one data > frame. > > I’d rather not use a loop and am relatively new to R. Is there a way i can > use tapply and set it to the conditions above so that I can create the df > below? > > > condition mean(b) mean(c) > A d>=2 ____ _____ > B d>=2 ____ _____ > A d>=4 ____ _____ > B d>=4 ____ _____ > A d>=6 ____ _____ > B d>=6 ____ _____ > > > > Ken > kmna...@gmail.com <mailto:kmna...@gmail.com> > 914-450-0816 <tel:914-450-0816> (tel) > 347-730-4813 <tel:347-730-4813> (fax) > > > > ______________________________________________ > R-help@r-project.org <mailto:R-help@r-project.org> mailing list -- To > UNSUBSCRIBE and more, see > https://stat.ethz.ch/mailman/listinfo/r-help > <https://stat.ethz.ch/mailman/listinfo/r-help> > PLEASE do read the posting guide http://www.R-project.org/posting-guide.html > <http://www.r-project.org/posting-guide.html> > and provide commented, minimal, self-contained, reproducible code. > ______________________________________________ R-help@r-project.org mailing list -- To UNSUBSCRIBE and more, see 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.
