[SciPy-user] Rootfinding procedures for Vector-valued functions

David M. Cooke cookedm at physics.mcmaster.ca
Thu May 27 22:24:34 CDT 2004


On Thu, May 27, 2004 at 09:49:29AM +0200, Nils Wagner wrote:
> Pearu Peterson wrote:
> >
> >On Wed, 26 May 2004, Nils Wagner wrote:
> >
> >
> >>Hopefully my last question with respect to this topic ...
> >>Can I apply brentq, brenth in case of complex-valued functions ?
> >
> >
> >No. These functions can only deal with real-valued functions with one 
> >real argument.
> >
> >Pearu
> 
> Is it planned to upgrade the functions with respect to complex-valued 
> functions and vector-valued functions respectively ?

How? The Brent routines are one-dimensional zero finders.
Multidimensional (which includes complex) zero finders are much
different beasts from one-dimensional routines -- in general, you don't
a bracket around the zero.

You want scipy.optimize.fsolve for multidimensional problems.

-- 
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|David M. Cooke                      http://arbutus.physics.mcmaster.ca/dmc/
|cookedm at physics.mcmaster.ca



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