numpy diff の挙動メモ
import numpy as npimport matplotlib.pyplot as plta = np.array([1, 2, 2, 2, 2, 10, 3, 1, 1, 1])print(f"a, Expected 10 : {len(a)}")fig = plt.figure()ax = fig.add_subplot(1, 1, 1)x = np.arange(len(a))ax.plot(x, a)b = np.diff(a)print(f"b, Expec