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59 lines
1.5 KiB
Markdown
59 lines
1.5 KiB
Markdown
# 单选按钮
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使用单选按钮选择绘图的属性。
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单选按钮允许您在可视化中选择多个选项。在这种情况下，按钮允许用户选择要在图中显示的三种不同正弦波中的一种。
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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 RadioButtons
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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(8*np.pi*t)
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fig, ax = plt.subplots()
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l, = ax.plot(t, s0, lw=2, color='red')
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plt.subplots_adjust(left=0.3)
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axcolor = 'lightgoldenrodyellow'
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rax = plt.axes([0.05, 0.7, 0.15, 0.15], facecolor=axcolor)
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radio = RadioButtons(rax, ('2 Hz', '4 Hz', '8 Hz'))
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def hzfunc(label):
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hzdict = {'2 Hz': s0, '4 Hz': s1, '8 Hz': s2}
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ydata = hzdict[label]
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l.set_ydata(ydata)
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plt.draw()
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radio.on_clicked(hzfunc)
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rax = plt.axes([0.05, 0.4, 0.15, 0.15], facecolor=axcolor)
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radio2 = RadioButtons(rax, ('red', 'blue', 'green'))
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def colorfunc(label):
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l.set_color(label)
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plt.draw()
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radio2.on_clicked(colorfunc)
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rax = plt.axes([0.05, 0.1, 0.15, 0.15], facecolor=axcolor)
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radio3 = RadioButtons(rax, ('-', '--', '-.', 'steps', ':'))
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def stylefunc(label):
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l.set_linestyle(label)
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plt.draw()
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radio3.on_clicked(stylefunc)
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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: radio_buttons.py](https://matplotlib.org/_downloads/radio_buttons.py)
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- [下载Jupyter notebook: radio_buttons.ipynb](https://matplotlib.org/_downloads/radio_buttons.ipynb) |