Order of operations. Since you didn't specify the order you wanted by using parentheses, R chose, and it wasn't what you wanted.
> 64:70[-c(2, 4)] # what you said [1] 64 65 66 67 68 69 70 > (64:70)[-c(2, 4)] # what you thought you said [1] 64 66 68 69 70 > 64:(70[-c(2, 4)]) # what R thought you said [1] 64 65 66 67 68 69 70 Sarah On Fri, Feb 19, 2010 at 4:33 PM, Stuart Luppescu <s...@ccsr.uchicago.edu> wrote: > Hello, this is just a point of curiosity with me. I want a sequence of > numbers from 64 to 70, omitting the 2nd and 4th numbers. I can do it > these ways: > >> seq(64, 70)[-c(2, 4)] > [1] 64 66 68 69 70 > >> foo <- 64:70 >> foo[-c(2, 4)] > [1] 64 66 68 69 70 > > But how come this doesn't work? >> 64:70[-c(2, 4)] > [1] 64 65 66 67 68 69 70 > > Just wondering. -- Sarah Goslee http://www.functionaldiversity.org ______________________________________________ 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.
