PPoly.roots(self, discontinuity=True, extrapolate=None)
Whether to report sign changes across discontinuities at breakpoints as roots.
If bool, determines whether to return roots from the polynomial extrapolated based on first and last intervals, 'periodic' works the same as False. If None (default), use self.extrapolate.
Roots of the polynomial(s).
If the PPoly object describes multiple polynomials, the return value is an object array whose each element is an ndarray containing the roots.
Find real roots of the piecewise polynomial.
The following pages refer to to this document either explicitly or contain code examples using this.
scipy.interpolate._fitpack2:UnivariateSpline.roots
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