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53 lines
1.5 KiB
Markdown
53 lines
1.5 KiB
Markdown
# 三维中的文字注释
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演示在3D绘图上放置文本注释。
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显示的功能：
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- 使用具有三种“zdir”值的文本函数：无，轴名称（例如'x'）或方向元组（例如（1,1,0））。
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- 使用带有color关键字的文本功能。
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- 使用text2D函数将文本放在ax对象上的固定位置。
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```python
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# This import registers the 3D projection, but is otherwise unused.
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from mpl_toolkits.mplot3d import Axes3D # noqa: F401 unused import
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import matplotlib.pyplot as plt
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fig = plt.figure()
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ax = fig.gca(projection='3d')
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# Demo 1: zdir
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zdirs = (None, 'x', 'y', 'z', (1, 1, 0), (1, 1, 1))
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xs = (1, 4, 4, 9, 4, 1)
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ys = (2, 5, 8, 10, 1, 2)
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zs = (10, 3, 8, 9, 1, 8)
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for zdir, x, y, z in zip(zdirs, xs, ys, zs):
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label = '(%d, %d, %d), dir=%s' % (x, y, z, zdir)
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ax.text(x, y, z, label, zdir)
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# Demo 2: color
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ax.text(9, 0, 0, "red", color='red')
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# Demo 3: text2D
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# Placement 0, 0 would be the bottom left, 1, 1 would be the top right.
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ax.text2D(0.05, 0.95, "2D Text", transform=ax.transAxes)
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# Tweaking display region and labels
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ax.set_xlim(0, 10)
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ax.set_ylim(0, 10)
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ax.set_zlim(0, 10)
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ax.set_xlabel('X axis')
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ax.set_ylabel('Y axis')
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ax.set_zlabel('Z axis')
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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: text3d.py](https://matplotlib.org/_downloads/text3d.py)
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- [下载Jupyter notebook: text3d.ipynb](https://matplotlib.org/_downloads/text3d.ipynb) |