[SciPy-user] SciPy-user Digest, Vol 65, Issue 50
Thu Feb 19 15:03:21 CST 2009
> On Wed, Jan 21, 2009 at 1:22 PM, Rob Clewley <email@example.com>
>> odeint is a wrapper for the LSODA solver in the Fortran ODEPACK
> >> library. This library also includes LSODAR, which is LSODA with
> >> root-finding (aka event detection). Does anyone want to take a stab at
> >> wrapping LSODAR? The wrapping of LSODA with odeint provides a good
> >> starting point, and an ODE solver with root-finding would be a great
> >> addition to SciPy.
> >> Warren
> > Ryan Gutenkunst already wrapped it while working on the SloppyCell
> package. See
> > http://osdir.com/ml/python.scientific.devel/2005-07/msg00028.html
> > with a link there to the code. I've never tried it myself or even
> > looked at it, FYI :)
> > -Rob
> PS There's some mention of Ryan's lsodar.pyf in the trunk of scipy SVN, as
> but I don't know if it's still there. If it is, is the associated pyd
> now shipped with Scipy? I haven't installed a new version for months.
Sorry for letting this drop for... err... awhile. I don't speak
"developer", but I take this to mean that this functionality is available in
a few other python packages (PyDSTool, CVODE via PySundials), and that there
may or may not be pieces of lsodar already in scipy.
As a MATLAB to python/numpy/scipy convert who really still has one foot on
each log, as it were, having this 'root finding' functionality readily
available in python/scipy/numpy would be a big plus. Consider this one vote
for finishing the wrapping of lsodar. Of course, I should not say such
things without volunteering to help... I would be happy to contribute, but I
don't even know where to start.
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