Tagged: Python画图初体验—-曲面图和等高线图

import numpy as npnimport matplotlib.pyplot as pltnfrom mpl_toolkits.mplot3d import Axes3Dnnfig = plt.figure()nax = Axes3D(fig) #生成一个3d对象nX = np.arange(-4, 4, 0.25)nY = np.arange(-4, 4, 0.25)nX, Y