Full_Name: Gerald Guglielmo Version: 2.8.1 (2008-12-22) OS: OSX Leopard Submission from: (NULL) (131.225.103.35)
When I attempt to use the hist() function to bin integers the behavior seems very odd as the bin boundary seems inconsistent across the various bins. For some bins the upper boundary includes the next integer value, while in others it does not. If I add 0.1 to every value, then the hist() binning behavior is what I would normally expect. > h1<-hist(c(1,2,2,3,3,3,4,4,4,4,5,5,5,5,5)) > h1$mids [1] 1.5 2.5 3.5 4.5 > h1$counts [1] 3 3 4 5 > h2<-hist(c(1.1,2.1,2.1,3.1,3.1,3.1,4.1,4.1,4.1,4.1,5.1,5.1,5.1,5.1,5.1)) > h2$mids [1] 1.5 2.5 3.5 4.5 5.5 > h2$counts [1] 1 2 3 4 5 Naively I would have expected the same distribution of counts in the two cases, but clearly that is not happening. This is a simple example to illustrate the behavior, originally I noticed this while binning a large data sample where I had set the breaks=c(0,24,1). ______________________________________________ R-devel@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-devel
