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34 lines
1.1 KiB
Markdown
34 lines
1.1 KiB
Markdown
# 英寸和厘米
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该示例说明了使用绘图函数的xunits和yunits参数将默认x和y单位（ax1）覆盖为英寸和厘米的功能。 请注意，应用转换以获取正确单位的数字。
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此示例需要[basic_units.py](https://matplotlib.org/_downloads/3a73b4cd6e12aa53ff277b1b80d631c1/basic_units.py)
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```python
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from basic_units import cm, inch
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import matplotlib.pyplot as plt
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import numpy as np
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cms = cm * np.arange(0, 10, 2)
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fig, axs = plt.subplots(2, 2)
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axs[0, 0].plot(cms, cms)
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axs[0, 1].plot(cms, cms, xunits=cm, yunits=inch)
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axs[1, 0].plot(cms, cms, xunits=inch, yunits=cm)
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axs[1, 0].set_xlim(3, 6) # scalars are interpreted in current units
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axs[1, 1].plot(cms, cms, xunits=inch, yunits=inch)
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axs[1, 1].set_xlim(3*cm, 6*cm) # cm are converted to inches
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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: units_sample.py](https://matplotlib.org/_downloads/units_sample.py)
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- [下载Jupyter notebook: units_sample.ipynb](https://matplotlib.org/_downloads/units_sample.ipynb) |