您可以尝试：
import matplotlib.pyplot as pltimport numpy as npm=3c=-2x1Data= np.random.normal(scale=2, loc=.4, size=25)y1Data= np.random.normal(scale=3, loc=1.2, size=25)x2Data= np.random.normal(scale=1, loc=3.4, size=25)y2Data= np.random.normal(scale=.65, loc=-.2, size=25)fig = plt.figure()ax = fig.add_subplot( 1, 1, 1 )ax.scatter(x1Data, y1Data)ax.scatter(x2Data, y2Data)ylim = ax.get_ylim()xlim = ax.get_xlim()ax.plot( xlim, [ m * x + c for x in xlim ], 'r:' )ax.set_ylim( ylim )ax.set_xlim( xlim )plt.show()
