Re: [R] atan2(1,1i)

From: Ravi Varadhan <rvaradhan_at_jhmi.edu>
Date: Wed 29 Mar 2006 - 01:29:48 EST


Try this:

> atan2(1+0i,1i)

[1] NaN-Infi

Ravi.

> -----Original Message-----
> From: r-help-bounces@stat.math.ethz.ch [mailto:r-help-
> bounces@stat.math.ethz.ch] On Behalf Of Robin Hankin
> Sent: Tuesday, March 28, 2006 9:13 AM
> To: RHelp
> Subject: [R] atan2(1,1i)
>
> Hi
>
> ?atan2 says that atan2(y,x)=atan(y/x) for x and y numeric or complex
> vectors.
>
> Well, I would expect atan2(1,1i) to be equal to atan(-1i), but
>
> > atan2(1,1i)
> Error in atan2(y, x) : Non-numeric argument to mathematical function
> > R.version
> _
> platform powerpc-apple-darwin8.5.0
> arch powerpc
> os darwin8.5.0
> system powerpc, darwin8.5.0
> status alpha
> major 2
> minor 3.0
> year 2006
> month 03
> day 27
> svn rev 37590
> language R
> version.string Version 2.3.0 alpha (2006-03-27 r37590)
> >
>
>
>
>
> --
> Robin Hankin
> Uncertainty Analyst
> National Oceanography Centre, Southampton
> European Way, Southampton SO14 3ZH, UK
> tel 023-8059-7743
>
> ______________________________________________
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> guide.html



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https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html Received on Wed Mar 29 02:23:42 2006

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