SciPy

scipy.interpolate.PchipInterpolator.from_spline

classmethod PchipInterpolator.from_spline(tck, extrapolate=None)[source]

Construct a piecewise polynomial from a spline

Parameters
tck

A spline, as returned by splrep or a BSpline object.

extrapolatebool or ‘periodic’, optional

If bool, determines whether to extrapolate to out-of-bounds points based on first and last intervals, or to return NaNs. If ‘periodic’, periodic extrapolation is used. Default is True.