matplotlib & pandas

Python/matplotlab/gallery/widgets/multicursor.md

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+# 多光标
+
+同时在多个图上显示光标。
+
+此示例生成两个子图，并将光标悬停在一个子图中的数据上，该数据点的值分别显示在两个子图中。
+
+![多光标示例](https://matplotlib.org/_images/sphx_glr_multicursor_001.png)
+
+```python
+import numpy as np
+import matplotlib.pyplot as plt
+from matplotlib.widgets import MultiCursor
+
+t = np.arange(0.0, 2.0, 0.01)
+s1 = np.sin(2*np.pi*t)
+s2 = np.sin(4*np.pi*t)
+
+fig, (ax1, ax2) = plt.subplots(2, sharex=True)
+ax1.plot(t, s1)
+ax2.plot(t, s2)
+
+multi = MultiCursor(fig.canvas, (ax1, ax2), color='r', lw=1)
+plt.show()
+```
+
+## 下载这个示例
+            
+- [下载python源码: multicursor.py](https://matplotlib.org/_downloads/multicursor.py)
+- [下载Jupyter notebook: multicursor.ipynb](https://matplotlib.org/_downloads/multicursor.ipynb)