pyrtid.utils.operators.hessian_cfd

pyrtid.utils.operators.hessian_cfd(param: ndarray[Any, dtype[float64]], dx: float, axis: int = 0) → ndarray[Any, dtype[float64]]

Compute the hessian matching gradient_ffd.

Parameters

• param (np.array) – An N-dimensional array containing samples of a scalar function.

• dx (float) – Spacing between param values along the axis.

• axis (int) – Axis on which to compute the gradient (0=x, 1=y)

Returns

grad – The hessian

Return type

NDArrayFloat