[R] atan2(1,1i)

[Ravi Varadhan]

Try this:

> atan2(1+0i,1i)
[1] NaN-Infi

Ravi.

> -----Original Message-----
> From: r-help-bounces at stat.math.ethz.ch [mailto:r-help-
> bounces at 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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