matplotlib表面三维图

1.basic

• numpy.meshgrid
• 由一维数组到二维数组，用于生成网格数据
• matplotlib
• python绘图库

2.code

In [88]: from mpl_toolkits.mplot3d import Axes3D

In [89]: from matplotlib import cm

In [108]: from matplotlib.ticker import LinearLocator,FormatStrFormatter

In [91]: import matplotlib.pyplot as plt

In [92]: import numpy as np

In [93]: fig=plt.figure(figsize=(12,9))

In [94]: points=np.arange(-4,4,0.25)

In [95]: xx,yy=np.meshgrid(points,points)

In [96]: r=np.sqrt(xx**2+yy**2)

In [97]: z=np.sin(r)
In [103]: surf=ax.plot_surface(xx,yy,z,rstride=1,cstride=1,cmap=cm.coolwarm,linewidth=0,antialiased=False)

In [104]: ax.set_zlim(-1.01,1.01)
Out[104]: (-1.01, 1.01)

In [105]: ax.zaxis.set_major_locator(LinearLocator(10))

In [109]: ax.zaxis.set_major_formatter(FormatStrFormatter('%.02f'))

In [110]: fig.colorbar(surf,shrink=0.6,aspect=6)
Out[110]: <matplotlib.colorbar.Colorbar at 0xaae3710>

In [111]: plt.show()

3.result