Python 将 pandas.Series 直方图保存到文件
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save a pandas.Series histogram plot to file
提问by GeauxEric
In ipython Notebook, first create a pandas Series object, then by calling the instance method .hist(), the browser displays the figure.
在ipython Notebook中，首先创建一个pandas Series对象，然后通过调用实例方法.hist()，浏览器显示图形。
I am wondering how to save this figure to a file (I mean not by right click and save as, but the commands needed in the script).
我想知道如何将此图保存到文件中（我的意思不是右键单击并另存为，而是脚本中所需的命令）。
采纳答案by Phillip Cloud
Use the Figure.savefig()method, like so:
使用该Figure.savefig()方法，如下所示：
ax = s.hist() # s is an instance of Series
fig = ax.get_figure()
fig.savefig('/path/to/figure.pdf')
It doesn't have to end in pdf, there are many options. Check out the documentation.
它不必以 结尾pdf，有很多选择。查看文档。
Alternatively, you can use the pyplotinterface and just call the savefigas a function to save the most recently created figure:
或者，您可以使用该pyplot接口，只需将 调用savefig为函数来保存最近创建的图形：
import matplotlib.pyplot as plt
s.hist()
plt.savefig('path/to/figure.pdf') # saves the current figure
回答by joelostblom
You can use ax.figure.savefig():
您可以使用ax.figure.savefig()：
import pandas as pd
s = pd.Series([0, 1])
ax = s.plot.hist()
ax.figure.savefig('demo-file.pdf')
This has no practical benefit over ax.get_figure().savefig()as suggested in Philip Cloud's answer, so you can pick the option you find the most aesthetically pleasing. In fact, get_figure()simply returns self.figure:
ax.get_figure().savefig()正如 Philip Cloud 的回答所建议的那样，这没有实际好处，因此您可以选择您认为最美观的选项。事实上，get_figure()只需返回self.figure：
# Source from snippet linked above
def get_figure(self):
"""Return the `.Figure` instance the artist belongs to."""
return self.figure
