import matplotlib as mpl import numpy as np import matplotlib.pyplot as plt np.random.seed(2000) y = np.random.standard_normal((20, 2)) # print(y) ''' 不同的求和 print(y.cumsum()) print(y.sum(axis=0)) print(y.cumsum(axis=0)) ''' # 绘图 plt.figure(figsize=(7, 4)) plt.plot(y.cumsum(axis=0), linewidth=2.5) plt.plot(y.cumsum(axis=0), 'bo') plt.grid(True) plt.axis("tight") plt.xlabel('index') plt.ylabel('values') plt.title('a simple plot') plt.show()