pwtools.num.polyval

pwtools.num.polyval(fit, points, der=0)[source]

Evaluate polynomial generated by polyfit() on points.

Parameters:

  • fit (see polyfit()) –

  • points (see polyfit()) –

  • der (int, optional) – Derivative order. Only for 1D, uses np.polyder().

Notes

For 1D we provide “analytic” derivatives using np.polyder(). For ND, we didn’t implement an equivalent machinery. For 2D, you might get away with fitting a bispline (see Interpol2D) and use it’s derivs. For ND, try rbf.py’s RBF interpolator which has at least 1st derivatives for arbitrary dimensions.

See also

PolyFit, PolyFit1D, polyfit()