matplotlib & pandas

Python/matplotlab/gallery/shapes_and_collections/path_patch.md

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+# PathPatch对象
+
+此示例显示如何通过Matplotlib的API创建 [Path](https://matplotlib.org/api/path_api.html#matplotlib.path.Path) 和 [PathPatch](https://matplotlib.org/api/_as_gen/matplotlib.patches.PathPatch.html#matplotlib.patches.PathPatch) 对象。
+
+```python
+import matplotlib.path as mpath
+import matplotlib.patches as mpatches
+import matplotlib.pyplot as plt
+
+
+fig, ax = plt.subplots()
+
+Path = mpath.Path
+path_data = [
+    (Path.MOVETO, (1.58, -2.57)),
+    (Path.CURVE4, (0.35, -1.1)),
+    (Path.CURVE4, (-1.75, 2.0)),
+    (Path.CURVE4, (0.375, 2.0)),
+    (Path.LINETO, (0.85, 1.15)),
+    (Path.CURVE4, (2.2, 3.2)),
+    (Path.CURVE4, (3, 0.05)),
+    (Path.CURVE4, (2.0, -0.5)),
+    (Path.CLOSEPOLY, (1.58, -2.57)),
+    ]
+codes, verts = zip(*path_data)
+path = mpath.Path(verts, codes)
+patch = mpatches.PathPatch(path, facecolor='r', alpha=0.5)
+ax.add_patch(patch)
+
+# plot control points and connecting lines
+x, y = zip(*path.vertices)
+line, = ax.plot(x, y, 'go-')
+
+ax.grid()
+ax.axis('equal')
+plt.show()
+```
+
+![PathPatch对象](https://matplotlib.org/_images/sphx_glr_path_patch_001.png)
+
+## 参考
+
+此示例中显示了以下函数，方法，类和模块的使用：
+
+```python
+import matplotlib
+matplotlib.path
+matplotlib.path.Path
+matplotlib.patches
+matplotlib.patches.PathPatch
+matplotlib.axes.Axes.add_patch
+```
+
+## 下载这个示例
+            
+- [下载python源码: path_patch.py](https://matplotlib.org/_downloads/path_patch.py)
+- [下载Jupyter notebook: path_patch.ipynb](https://matplotlib.org/_downloads/path_patch.ipynb)