图形图例演示

不是在每个轴上绘制图例，而是可以绘制图形的所有子轴上的所有艺术家的图例。

import numpy as np
import matplotlib.pyplot as plt
fig, axs = plt.subplots(1, 2)
x = np.arange(0.0, 2.0, 0.02)
y1 = np.sin(2 * np.pi * x)
y2 = np.exp(-x)
l1, l2 = axs[0].plot(x, y1, 'rs-', x, y2, 'go')
y3 = np.sin(4 * np.pi * x)
y4 = np.exp(-2 * x)
l3, l4 = axs[1].plot(x, y3, 'yd-', x, y4, 'k^')
fig.legend((l1, l2), ('Line 1', 'Line 2'), 'upper left')
fig.legend((l3, l4), ('Line 3', 'Line 4'), 'upper right')
plt.tight_layout()
plt.show()

下载这个示例

• 下载python源码: figlegend_demo.py
• 下载Jupyter notebook: figlegend_demo.ipynb