On 04-Sep-07 09:53:43, Christoph Heibl wrote: > Hi list, > > The function is.integer tests if an object is of type integer: > > see e.g.: > > is.integer(12) # FALSE > is.real(12) # TRUE > mode(12) # "numeric" > > But how can I test if a number is actually an integer? R seek is > difficult to search in this case because it mainly yields entries > about the integer()-function family. > > Thanks for any hint! > Christoph Heibl
In infer you want to test whether the real x has an integer value. ((x-floor(x))==0) would do it (covers negative integers as well), though there may well be a smarter way. Best wishes, Ted. -------------------------------------------------------------------- E-Mail: (Ted Harding) <[EMAIL PROTECTED]> Fax-to-email: +44 (0)870 094 0861 Date: 04-Sep-07 Time: 11:11:46 ------------------------------ XFMail ------------------------------ ______________________________________________ R-help@stat.math.ethz.ch 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.
