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66 lines
2.0 KiB
Markdown
66 lines
2.0 KiB
Markdown
# 艺术家对象测试
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每个Matplotlib原始艺术家类型的测试单元支持。
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轴处理单位转换，艺术家保留指向其父轴的指针。如果要将它们与单位数据一起使用，则必须使用轴实例初始化艺术家，否则他们将不知道如何将单位转换为标量。
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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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import random
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import matplotlib.lines as lines
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import matplotlib.patches as patches
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import matplotlib.text as text
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import matplotlib.collections as collections
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from basic_units import cm, inch
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import numpy as np
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import matplotlib.pyplot as plt
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fig, ax = plt.subplots()
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ax.xaxis.set_units(cm)
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ax.yaxis.set_units(cm)
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# Fixing random state for reproducibility
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np.random.seed(19680801)
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if 0:
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# test a line collection
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# Not supported at present.
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verts = []
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for i in range(10):
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# a random line segment in inches
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verts.append(zip(*inch*10*np.random.rand(2, random.randint(2, 15))))
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lc = collections.LineCollection(verts, axes=ax)
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ax.add_collection(lc)
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# test a plain-ol-line
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line = lines.Line2D([0*cm, 1.5*cm], [0*cm, 2.5*cm],
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lw=2, color='black', axes=ax)
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ax.add_line(line)
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if 0:
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# test a patch
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# Not supported at present.
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rect = patches.Rectangle((1*cm, 1*cm), width=5*cm, height=2*cm,
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alpha=0.2, axes=ax)
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ax.add_patch(rect)
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t = text.Text(3*cm, 2.5*cm, 'text label', ha='left', va='bottom', axes=ax)
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ax.add_artist(t)
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ax.set_xlim(-1*cm, 10*cm)
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ax.set_ylim(-1*cm, 10*cm)
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# ax.xaxis.set_units(inch)
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ax.grid(True)
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ax.set_title("Artists with units")
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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: artist_tests.py](https://matplotlib.org/_downloads/artist_tests.py)
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- [下载Jupyter notebook: artist_tests.ipynb](https://matplotlib.org/_downloads/artist_tests.ipynb) |