学习笔记----python绘图hist

# python 绘制直方图

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import numpy as np

import matplotlib.pyplot as plt

np.random.seed(0)

mu = 200

sigma = 25

x = np.random.normal(mu, sigma, size=100)

print(x)

fig, (ax0, ax1) = plt.subplots(ncols=2, figsize=(8, 4))

ax0.hist(x, 20, normed=1, histtype='stepfilled', facecolor='g', alpha=0.75)

ax0.set_title('stepfilled')

# Create a histogram by providing the bin edges (unequally spaced).

bins = [100, 150, 180, 195, 205, 220, 250, 300]

ax1.hist(x, bins, normed=1, histtype='bar', rwidth=0.8)

ax1.set_title('unequal bins')

fig.tight_layout()

plt.show()

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