python中matplotlib的画图,三维图,柱状图,折线图
首先是三维图,直接上代码:#这个是画三维图的import numpy as npimport randomimport xlrdimport xlwtimport matplotlib.pyplot as pltfrom mpl_toolkits.mplot3d import Axes3Dx=np.linspace(-10,10,20)y=np.linspace(-5,5,...