matplotlib应用

 1 #-*- coding:utf-8 -*-
 2 #
 3 import numpy as np
 4 import matplotlib.pyplot as plt
 5 
 6 x = np.linspace(0,10,1000)
 7 y = np.sin(x)+1
 8 z = np.cos(x**2)+1
 9 
10 plt.figure(figsize=(8,4))
11 plt.plot(x,y,label = ‘$\sin x+1$‘,color = ‘red‘,linewidth=2)
12 plt.plot(x,z,‘b--‘,label = ‘$\cos x^2+1$‘)
13 plt.xlabel(‘Time(s)‘)
14 plt.ylabel(‘Volt‘)
15 plt.title(‘A Simple Example‘)
16 plt.ylim(0,2.2)
17 plt.legend()
18 plt.show()