Re: [R] WIERD: Basic computing in R

From: Thomas Lumley <tlumley_at_u.washington.edu>
Date: Tue, 01 Jul 2008 14:28:59 -0700 (PDT)

This is FAQ 7.33

         -thomas

On Tue, 1 Jul 2008, poolloopus_at_yahoo.com wrote:

> Can someone please enlighten me as to why the following happens?
>> -2.7^8.6
> [1] -5125.407
>
>> p<- -2.7
>> q<- 8.6
>> p^q
> [1] NaN
> R seems perfectly able to calculate -2.7^8.6, but fails when the exact same values are assigned to variables and then the computation is repeated.
> Thanks in advance for any suggetsions.
> Kris.
>
> ______________________________________________
> R-help_at_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.
>

Thomas Lumley			Assoc. Professor, Biostatistics
tlumley_at_u.washington.edu	University of Washington, Seattle

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