import numpy as np
import matplotlib.pyplot as plt
a=np.arange(5)
plt.plot(a-2,a*-1.5,'ro--',label='a')
plt.plot(a-1,a*3.5,'gx-',label='b')
plt.plot(a/2-2,a*-5.5,'y',label='c')
plt.plot(a-4,a*7.5,'bs-',label='d')
plt.plot(a-3,a*-9.5,'mH--',label='e')
plt.savefig('test3',dpi=600)
plt.savefig('../picture/test3',dpi=600)
plt.legend()
plt.show()
