On Fri, Nov 9, 2012 at 10:02 AM, Cleber N.Borges <klebyn@yahoo.com.br>wrote:

> Hello useRs,
>
> The results of the SORT function differ from Scilab/Matlab for Complex
> Numbers in my example.
> This design is the desirable in R?
>

Well, it's deliberate and documented.

R sorts complex numbers by real part then by imaginary part.  Matlab,
according to its documentation, sorts by modulus then phase.

There isn't a unique way to sort complex numbers, so you're going to get
differences.  Personally, I think the R method is more straightforward,
since you don't need to decide and remember where the branch cut goes on
the phase coordinate.

   -thomas

-- 
Thomas Lumley
Professor of Biostatistics
University of Auckland

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