scipy.interpolate.InterpolatedUnivariateSpline.
导数#
- InterpolatedUnivariateSpline.derivatives(x)[source]#
返回样条在点 x 处的所有导数。
- 参数:
- xfloat
要评估导数的点。
- 返回值:
- derndarray, shape(k+1,)
0 到 k 阶导数。
示例
>>> import numpy as np >>> from scipy.interpolate import UnivariateSpline >>> x = np.linspace(0, 3, 11) >>> y = x**2 >>> spl = UnivariateSpline(x, y) >>> spl.derivatives(1.5) array([2.25, 3.0, 2.0, 0])