pchip method?

[LucasPa]

Hello,

Thank you for providing in C++ this RegularGridInterpolator similar to what is in scipy.interpolate. That is a feature that I need in one of my code.
However at the moment, I see that the "pchip" method is not implemented. I observe with scipy.interpolate.RegularGridInterpolator that for the applications I aim, the "pchip" method gives much better results (it avoids to create oscillations in flat regions for instance).

Best,

Lucas

[tanaya-mankad]

Hello Lucas, thanks for checking out btwxt and contributing an issue!
We don't have plans at the moment to add any alternative cubic spline interpolators, but if and when the times comes, we'd be happy to look at Pchip for the advantages you suggest.
Kind regards,
Tanaya