BSplineApprox.approx_basis_and_deriv2()

BSplineApprox.approx_basis_and_deriv2(x)

Approximates basis matrix and matrices of first and second derivatives.

Parameters:

x (Array) – Input data.

Return type:

tuple[Array, Array, Array]

Returns:

• basis (Array) – Basis matrix.

• deriv (Array) – First derivative.

• deriv2 (Array) – Second derivative.