Re: [R] calculate differences - strange outcome

From: Duncan Murdoch <>
Date: Thu, 17 Jul 2008 06:24:39 -0400

Kunzler, Andreas wrote:
> Dear List,
> I ran into some trouble by calculating differences. For me it is
> important that differences are either 0 or not.
> 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?

This is FAQ 7.31.

Duncan Murdoch mailing list PLEASE do read the posting guide and provide commented, minimal, self-contained, reproducible code. Received on Thu 17 Jul 2008 - 10:44:00 GMT

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