On Thu, 17 Jul 2008 11:47:42 +0200 "Kunzler, Andreas" <[EMAIL PROTECTED]> wrote:
> I ran into some trouble by calculating differences. For me it is > important that differences are either 0 or not. If that is the case, restrict yourself to calculating with integers. :) > So I don't understand the outcome of this calculation > > 865.56-(782.86+0+63.85+18.85+0) > [1] -1.136868e-13 > > I run R version 2.71 on WinXP > > I could solve my problem by using > round() > but I would like to know the reason. > Maybe someone can help me? FAQ 7.31 and the reference cited therein should shed light on your problem. Best wishes, Berwin =========================== Full address ============================= Berwin A Turlach Tel.: +65 6516 4416 (secr) Dept of Statistics and Applied Probability +65 6516 6650 (self) Faculty of Science FAX : +65 6872 3919 National University of Singapore 6 Science Drive 2, Blk S16, Level 7 e-mail: [EMAIL PROTECTED] Singapore 117546 http://www.stat.nus.edu.sg/~statba ______________________________________________ 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.