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47 lines
1.1 KiB
Markdown
47 lines
1.1 KiB
Markdown
# Findobj演示
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递归查找符合某些条件的所有对象
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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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import matplotlib.text as text
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a = np.arange(0, 3, .02)
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b = np.arange(0, 3, .02)
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c = np.exp(a)
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d = c[::-1]
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fig, ax = plt.subplots()
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plt.plot(a, c, 'k--', a, d, 'k:', a, c + d, 'k')
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plt.legend(('Model length', 'Data length', 'Total message length'),
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loc='upper center', shadow=True)
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plt.ylim([-1, 20])
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plt.grid(False)
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plt.xlabel('Model complexity --->')
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plt.ylabel('Message length --->')
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plt.title('Minimum Message Length')
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# match on arbitrary function
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def myfunc(x):
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return hasattr(x, 'set_color') and not hasattr(x, 'set_facecolor')
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for o in fig.findobj(myfunc):
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o.set_color('blue')
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# match on class instances
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for o in fig.findobj(text.Text):
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o.set_fontstyle('italic')
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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: findobj_demo.py](https://matplotlib.org/_downloads/findobj_demo.py)
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- [下载Jupyter notebook: findobj_demo.ipynb](https://matplotlib.org/_downloads/findobj_demo.ipynb) |