matplotlib & pandas

Python/matplotlab/gallery/frontpage/histogram.md

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+# Frontpage 直方图示例
+
+此示例再现Frontpage 直方图示例。
+
+![Frontpage 直方图示例](https://matplotlib.org/_images/sphx_glr_histogram_001.png)
+
+```python
+import matplotlib.pyplot as plt
+import numpy as np
+
+
+random_state = np.random.RandomState(19680801)
+X = random_state.randn(10000)
+
+fig, ax = plt.subplots()
+ax.hist(X, bins=25, density=True)
+x = np.linspace(-5, 5, 1000)
+ax.plot(x, 1 / np.sqrt(2*np.pi) * np.exp(-(x**2)/2), linewidth=4)
+ax.set_xticks([])
+ax.set_yticks([])
+fig.savefig("histogram_frontpage.png", dpi=25)  # results in 160x120 px image
+```
+
+## 下载这个示例
+            
+- [下载python源码: histogram.py](https://matplotlib.org/_downloads/histogram.py)
+- [下载Jupyter notebook: histogram.ipynb](https://matplotlib.org/_downloads/histogram.ipynb)