matplotlib & pandas

Python/matplotlab/gallery/mplot3d/voxels.md

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+# 三维体素/体积绘制
+
+演示使用ax.voxels绘制3D体积对象
+
+![三维体素/体积绘制示例](https://matplotlib.org/_images/sphx_glr_voxels_001.png)
+
+```python
+import matplotlib.pyplot as plt
+import numpy as np
+
+# This import registers the 3D projection, but is otherwise unused.
+from mpl_toolkits.mplot3d import Axes3D  # noqa: F401 unused import
+
+
+# prepare some coordinates
+x, y, z = np.indices((8, 8, 8))
+
+# draw cuboids in the top left and bottom right corners, and a link between them
+cube1 = (x < 3) & (y < 3) & (z < 3)
+cube2 = (x >= 5) & (y >= 5) & (z >= 5)
+link = abs(x - y) + abs(y - z) + abs(z - x) <= 2
+
+# combine the objects into a single boolean array
+voxels = cube1 | cube2 | link
+
+# set the colors of each object
+colors = np.empty(voxels.shape, dtype=object)
+colors[link] = 'red'
+colors[cube1] = 'blue'
+colors[cube2] = 'green'
+
+# and plot everything
+fig = plt.figure()
+ax = fig.gca(projection='3d')
+ax.voxels(voxels, facecolors=colors, edgecolor='k')
+
+plt.show()
+```
+
+## 下载这个示例
+            
+- [下载python源码: voxels.py](https://matplotlib.org/_downloads/voxels.py)
+- [下载Jupyter notebook: voxels.ipynb](https://matplotlib.org/_downloads/voxels.ipynb)