scipy.interpolate.BarycentricInterpolator.

derivative

BarycentricInterpolator.derivative(x, der=1)

Evaluate a single derivative of the polynomial at the point x.

Parameters:

xarray_like

Point or points at which to evaluate the derivatives

derinteger, optional

Which derivative to evaluate (default: first derivative). This number includes the function value as 0th derivative.

Returns:

dndarray

Derivative interpolated at the x-points. Shape of d is determined by replacing the interpolation axis in the original array with the shape of x.