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45 lines
1.2 KiB
Markdown
45 lines
1.2 KiB
Markdown
# 美元符刻度
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使用 [FormatStrFormatter](https://matplotlib.org/api/ticker_api.html#matplotlib.ticker.FormatStrFormatter) 在y轴标签上添加美元符号。
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```python
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import numpy as np
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import matplotlib.pyplot as plt
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import matplotlib.ticker as ticker
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# Fixing random state for reproducibility
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np.random.seed(19680801)
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fig, ax = plt.subplots()
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ax.plot(100*np.random.rand(20))
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formatter = ticker.FormatStrFormatter('$%1.2f')
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ax.yaxis.set_major_formatter(formatter)
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for tick in ax.yaxis.get_major_ticks():
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tick.label1On = False
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tick.label2On = True
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tick.label2.set_color('green')
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plt.show()
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```
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## 参考
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此示例中显示了以下函数，方法，类和模块的使用：
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```python
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import matplotlib
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matplotlib.ticker
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matplotlib.ticker.FormatStrFormatter
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matplotlib.axis.Axis.set_major_formatter
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matplotlib.axis.Axis.get_major_ticks
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matplotlib.axis.Tick
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```
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## 下载这个示例
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- [下载python源码: dollar_ticks.py](https://matplotlib.org/_downloads/dollar_ticks.py)
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- [下载Jupyter notebook: dollar_ticks.ipynb](https://matplotlib.org/_downloads/dollar_ticks.ipynb) |