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
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