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46 lines
1.6 KiB
Markdown
46 lines
1.6 KiB
Markdown
# 轻松创建子图
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在matplotlib的早期版本中,如果你想使用pythonic API并创建一个图形实例,并从中创建一个子图的网格,可能有共享轴,它涉及相当数量的样板代码。例如:
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```python
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import matplotlib.pyplot as plt
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import numpy as np
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x = np.random.randn(50)
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# old style
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fig = plt.figure()
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ax1 = fig.add_subplot(221)
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ax2 = fig.add_subplot(222, sharex=ax1, sharey=ax1)
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ax3 = fig.add_subplot(223, sharex=ax1, sharey=ax1)
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ax3 = fig.add_subplot(224, sharex=ax1, sharey=ax1)
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```
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费尔南多·佩雷斯提供了一个很好的方法来创建子图的一切 ``subplots()``(最后注意“s”),并为整个群体打开x和y共享。您可以单独打开轴...
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```python
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# new style method 1; unpack the axes
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fig, ((ax1, ax2), (ax3, ax4)) = plt.subplots(2, 2, sharex=True, sharey=True)
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ax1.plot(x)
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```
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或者将它们作为支持numpy索引的numrows x numcolumns对象数组返回
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```python
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# new style method 2; use an axes array
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fig, axs = plt.subplots(2, 2, sharex=True, sharey=True)
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axs[0, 0].plot(x)
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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: create_subplots.py](https://matplotlib.org/_downloads/create_subplots.py)
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- [下载Jupyter notebook: create_subplots.ipynb](https://matplotlib.org/_downloads/create_subplots.ipynb) |