matplotlib & pandas

Python/matplotlab/gallery/style_sheets/grayscale.md

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+# 灰度样式表
+
+此示例演示“灰度”样式表，该样式表将定义为rc参数的所有颜色更改为灰度。 但请注意，并非所有绘图元素都默认为rc参数定义的颜色。
+
+![灰度样式表示例](https://matplotlib.org/_images/sphx_glr_grayscale_001.png)
+
+```python
+import numpy as np
+import matplotlib.pyplot as plt
+
+# Fixing random state for reproducibility
+np.random.seed(19680801)
+
+
+def color_cycle_example(ax):
+    L = 6
+    x = np.linspace(0, L)
+    ncolors = len(plt.rcParams['axes.prop_cycle'])
+    shift = np.linspace(0, L, ncolors, endpoint=False)
+    for s in shift:
+        ax.plot(x, np.sin(x + s), 'o-')
+
+
+def image_and_patch_example(ax):
+    ax.imshow(np.random.random(size=(20, 20)), interpolation='none')
+    c = plt.Circle((5, 5), radius=5, label='patch')
+    ax.add_patch(c)
+
+
+plt.style.use('grayscale')
+
+fig, (ax1, ax2) = plt.subplots(ncols=2)
+fig.suptitle("'grayscale' style sheet")
+
+color_cycle_example(ax1)
+image_and_patch_example(ax2)
+
+plt.show()
+```
+
+## 下载这个示例
+            
+- [下载python源码: grayscale.py](https://matplotlib.org/_downloads/grayscale.py)
+- [下载Jupyter notebook: grayscale.ipynb](https://matplotlib.org/_downloads/grayscale.ipynb)