[SciPy-dev] some new ode solvers

Benny Malengier benny.malengier@gmail....
Tue Feb 24 02:52:17 CST 2009


I would just like to note here I added a scikit: odes, with two extra ode
solver, actually dae solvers, so the api called had to be different (they
are based on a residual, not on a lhs).
See: http://cage.ugent.be/~bm/progs.html

However the API changes, it would be nice if this type of dae solvers is
considered.

Benny

2009/2/23 Rob Clewley <rob.clewley@gmail.com>

> Hi John,
>
> > Attached is a patch which adds two new ODE solvers to the
> > scipy.integrate.ode module.
> > The solvers are dopri5 and dop853, which are explicit Runge-Kutta
> > pairs originally developed
> > by Dormand and Prince. The fortran code was downloaded from:
> >
> > http://www.unige.ch/~hairer/software.html<http://www.unige.ch/%7Ehairer/software.html>
>
> This is good news, and the scipy module certainly needs an updated
> API. I hope that previous discussions on this list about API changes
> will be looked up as there were some good suggestions then.
>
> I wonder how much extra work it would be to include H&W's stiff and
> delayed ODE and DAE solvers such as Radau, Retard, and Hem? Those
> would be of great value to Scipy users, I think, as there's little
> high-level language support available for those AFAIK (Radau is in
> PyDSTool but not the others).
>
> Thanks,
> Rob
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