, composite(U, s, Vh, len(s))))
True
#%fig=原始图像、使用10、20、50个向量合成的图像(从左到右)
img10 = composite(U, s, Vh...np.sin(x1)
sx1 = np.linspace(0, 12, 100)
sy1 = interpolate.UnivariateSpline(x1, y1, s=0)(sx1) #❶
x2...(0, 20, 2000)
spline2 = interpolate.UnivariateSpline(x2, y2, s=8) #❷
sy2 = spline2(sx2)
pl.figure(figsize...", label=u"数据点")
pl.plot(sx1, sy1, label=u"spline曲线")
pl.legend()
pl.subplot(212)
pl.plot(x2, y2, "...", label=u"数据点")
pl.plot(sx2, sy2, linewidth=2, label=u"spline曲线")
pl.plot(x2, np.sin(x2), label=u"无噪声曲线