Python画图高斯分布

import matplotlib.pyplot as pltimport numpy as npimport mathdef gaussian(sigma, x, u):y = np.exp(-(x - u) ** 2 / (2 * sigma ** 2)) / (sigma * math.sqrt(2 * math.pi))return y#x = np.linspace(220, 230, 10000)x = np.linspace(-800, 800, 10000)plt.title('PDF in Horizontal Direction', fontsize=22)plt.xticks(fontsize=22)plt.yticks(fontsize=22)axes = plt.subplot(111)axes.set_xticks([-800,-400,0,400,800])axes.set_yticks([0,0.001,0.002,0.0030])plt.plot(x, gaussian(120, x, 0), "b-", linewidth=6)plt.show()