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52 lines
1.8 KiB
Markdown
52 lines
1.8 KiB
Markdown
# 修补效果演示
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```python
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import matplotlib.pyplot as plt
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import matplotlib.patheffects as PathEffects
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import numpy as np
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if 1:
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plt.figure(1, figsize=(8, 3))
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ax1 = plt.subplot(131)
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ax1.imshow([[1, 2], [2, 3]])
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txt = ax1.annotate("test", (1., 1.), (0., 0),
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arrowprops=dict(arrowstyle="->",
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connectionstyle="angle3", lw=2),
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size=20, ha="center",
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path_effects=[PathEffects.withStroke(linewidth=3,
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foreground="w")])
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txt.arrow_patch.set_path_effects([
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PathEffects.Stroke(linewidth=5, foreground="w"),
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PathEffects.Normal()])
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pe = [PathEffects.withStroke(linewidth=3,
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foreground="w")]
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ax1.grid(True, linestyle="-", path_effects=pe)
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ax2 = plt.subplot(132)
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arr = np.arange(25).reshape((5, 5))
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ax2.imshow(arr)
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cntr = ax2.contour(arr, colors="k")
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plt.setp(cntr.collections, path_effects=[
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PathEffects.withStroke(linewidth=3, foreground="w")])
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clbls = ax2.clabel(cntr, fmt="%2.0f", use_clabeltext=True)
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plt.setp(clbls, path_effects=[
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PathEffects.withStroke(linewidth=3, foreground="w")])
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# shadow as a path effect
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ax3 = plt.subplot(133)
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p1, = ax3.plot([0, 1], [0, 1])
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leg = ax3.legend([p1], ["Line 1"], fancybox=True, loc='upper left')
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leg.legendPatch.set_path_effects([PathEffects.withSimplePatchShadow()])
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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: patheffect_demo.py](https://matplotlib.org/_downloads/patheffect_demo.py)
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- [下载Jupyter notebook: patheffect_demo.ipynb](https://matplotlib.org/_downloads/patheffect_demo.ipynb) |