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35 lines
794 B
Markdown
35 lines
794 B
Markdown
# 对数条形图
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绘制具有对数y轴的条形图。
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```python
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import matplotlib.pyplot as plt
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import numpy as np
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data = ((3, 1000), (10, 3), (100, 30), (500, 800), (50, 1))
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dim = len(data[0])
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w = 0.75
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dimw = w / dim
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fig, ax = plt.subplots()
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x = np.arange(len(data))
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for i in range(len(data[0])):
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y = [d[i] for d in data]
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b = ax.bar(x + i * dimw, y, dimw, bottom=0.001)
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ax.set_xticks(x + dimw / 2, map(str, x))
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ax.set_yscale('log')
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ax.set_xlabel('x')
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ax.set_ylabel('y')
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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: log_bar.py](https://matplotlib.org/_downloads/log_bar.py)
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- [下载Jupyter notebook: log_bar.ipynb](https://matplotlib.org/_downloads/log_bar.ipynb) |