Prof Brian Ripley wrote: > FAQ Q7.31 and ?"==" should enlighten you. > > None of 0.05, 0.1 ... 0.9, 0.95 are exactly representable on a binary > computer.
Doesn't the string "0.95" constitute an exact representation? And my computer is definitely binary. Although I suspect it is also bipolar. It's the lack of understanding of the underlying encoding of real numbers - or even the actual *existence* of the underlying encoding - that means the cry of 'FAQ Q7.31!' will long echo down the halls of R-help. Barry ______________________________________________ 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.