Python-Matplotlib 18 注释

 Python-Matplotlib 18 注释

 

EG1:

import numpy as np
import matplotlib.pyplot as plt

y = np.arange(-5, 6,1)
plt.plot(y, y*y)
plt.annotate('Annotate' , xy=(0,1) , xytext=(0,5) ,
             arrowprops=dict(facecolor='r' , frac=0.2 )
             )

plt.show()