plt legend 28

1import numpy as np
2import matplotlib.pyplot as plt
3
4x = np.linspace(0, 20, 1000)
5y1 = np.sin(x)
6y2 = np.cos(x)
7
8plt.plot(x, y1, "-b", label="sine")
9plt.plot(x, y2, "-r", label="cosine")
10plt.legend(loc="upper left")
11plt.ylim(-1.5, 2.0)
12plt.show()

1plt.legend(['first', 'second']);

1
2import matplotlib.pyplot as plt
3
4#define x and ysin
5plt.plot(x,ysin,label='sin(x)')
6plt.legend()
7plt.show()
8

1ax.plot(randn(1000).cumsum(), 'k.', label='_nolegend_')
2