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47 lines
1.4 KiB
Markdown
47 lines
1.4 KiB
Markdown
# 复选按钮
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使用复选按钮打开和关闭视觉元素。
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该程序显示了“检查按钮”的使用，类似于复选框。 显示了3种不同的正弦波，我们可以选择使用复选按钮显示哪些波形。
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```python
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import numpy as np
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import matplotlib.pyplot as plt
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from matplotlib.widgets import CheckButtons
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t = np.arange(0.0, 2.0, 0.01)
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s0 = np.sin(2*np.pi*t)
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s1 = np.sin(4*np.pi*t)
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s2 = np.sin(6*np.pi*t)
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fig, ax = plt.subplots()
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l0, = ax.plot(t, s0, visible=False, lw=2, color='k', label='2 Hz')
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l1, = ax.plot(t, s1, lw=2, color='r', label='4 Hz')
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l2, = ax.plot(t, s2, lw=2, color='g', label='6 Hz')
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plt.subplots_adjust(left=0.2)
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lines = [l0, l1, l2]
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# Make checkbuttons with all plotted lines with correct visibility
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rax = plt.axes([0.05, 0.4, 0.1, 0.15])
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labels = [str(line.get_label()) for line in lines]
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visibility = [line.get_visible() for line in lines]
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check = CheckButtons(rax, labels, visibility)
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def func(label):
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index = labels.index(label)
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lines[index].set_visible(not lines[index].get_visible())
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plt.draw()
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check.on_clicked(func)
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plt.show()
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```
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## 下载这个示例
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- [下载python源码: check_buttons.py](https://matplotlib.org/_downloads/check_buttons.py)
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- [下载Jupyter notebook: check_buttons.ipynb](https://matplotlib.org/_downloads/check_buttons.ipynb) |