Module « scipy.signal »

Fonction bspline - module scipy.signal

Signature de la fonction bspline

def bspline(x, n) 

Description

bspline.__doc__

B-spline basis function of order n.

    Parameters
    ----------
    x : array_like
        a knot vector
    n : int
        The order of the spline. Must be non-negative, i.e., n >= 0

    Returns
    -------
    res : ndarray
        B-spline basis function values

    See Also
    --------
    cubic : A cubic B-spline.
    quadratic : A quadratic B-spline.

    Notes
    -----
    Uses numpy.piecewise and automatic function-generator.

    Examples
    --------
    We can calculate B-Spline basis function of several orders:

    >>> from scipy.signal import bspline, cubic, quadratic
    >>> bspline(0.0, 1)
    1

    >>> knots = [-1.0, 0.0, -1.0]
    >>> bspline(knots, 2)
    array([0.125, 0.75, 0.125])

    >>> np.array_equal(bspline(knots, 2), quadratic(knots))
    True

    >>> np.array_equal(bspline(knots, 3), cubic(knots))
    True