[SciPy-Dev] Splines

Robert Kern robert.kern@gmail....
Thu Feb 21 05:10:48 CST 2013


On Thu, Feb 21, 2013 at 10:33 AM, Pablo Winant <pablo.winant@gmail.com> wrote:
> Hi,
>
> It's good to see people working in that direction. I will be more than
> happy to participate if I can.
>
> As a user : I really wish I had a cubic spline interpolation with
> natural bounding conditions (which implies linear extrapolation). This
> is what is implemented in Matlab's griddedInterpolator and is missing
> from the existing options in scipy (right?). Being able to evaluate the
> derivatives is also a big advantage.
>
> As a developper : there is the Einspline library that has a
> straightforward implementation in C. In particular, the representation
> of spline objects (C structs) and the low-level API are very
> straightforward and may be a good of inspiration. The library is
> currently GPL, but the author told me it could be made BSD if some m4
> macros are removed.

Which macros? The only M4 macros I see are for autoconf, which
shouldn't affect the license of the library itself and wouldn't be
used anyways if Einspline were merged into scipy.

-- 
Robert Kern


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