On Thu, Mar 12, 2015 at 2:43 PM, Steve Taylor <steve.tay...@aut.ac.nz> wrote: > How about letting a standard function decide which are numbers: > > which(!is.na(suppressWarnings(as.numeric(myvector)))) > > Also works with numbers in scientific notation and (presumably) different > decimal characters, e.g. comma if that's what the locale uses.
One problem is that Adrian wanted, for some reason, to exclude numbers such as "2." but accept "2.0" . That is, no unnecessary trailing decimal point. as.numeric() will not fail on "2." since that is a number. The example grep() specifically excludes this by requiring at least one digit after any decimal point. -- He's about as useful as a wax frying pan. 10 to the 12th power microphones = 1 Megaphone Maranatha! <>< John McKown ______________________________________________ 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.
