import matplotlib.pyplot as plt import numpy as np x = np.linspace(-3, 3, 50) y1 = 2*x + 1 y2 = x**2 plt.figure() #set x limits plt.xlim((-1, 2)) plt.ylim((-2, 3)) # set new sticks new_sticks = np.linspace(-1, 2, 5) plt.xticks(new_sticks) # set tick labels plt.yticks([-2, -1.8, -1, 1.22, 3], [r'$really bad$', r'$bad$', r'$normal$', r'$good$', r'$really good$']) # set line syles a,= plt.plot(x, y1, label='linear line') b,= plt.plot(x, y2, color='red', linewidth=1.0, linestyle='--', label='square line') plt.legend(loc='upper right') plt.show()
loc可用参数：
'best' : 0,
'upper right' : 1,
'upper left' : 2,
'lower left' : 3,
'lower right' : 4,
'right' : 5,
'center left' : 6,
'center right' : 7,
'lower center' : 8,
'upper center' : 9,
'center' : 10,