pandas 如何为 DataFrame 中的每一列绘制箱线图？
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How to plot a boxplot for each column in a DataFrame?
提问by helcode
I have a DataFrame dfof multiple columns and I would like to create a boxplotfor each columnusing matplotlib.
我有一个数据帧df多个列的，我想创建一个boxplot为每个列使用matplotlib。
df.info()output of my DataFrame below for reference
df.info()下面我的 DataFrame 的输出以供参考
<class 'pandas.core.frame.DataFrame'>
RangeIndex: 9568 entries, 0 to 9567
Data columns (total 5 columns):
Ambient Tempreature 9568 non-null float64
Exhaust Vacuum 9568 non-null float64
Ambient Pressure 9568 non-null float64
Relative Humidity 9568 non-null float64
PE 9568 non-null float64
dtypes: float64(5)
memory usage: 373.8 KB
回答by helcode
If you want to create a separate plot per column, then you can iterate over each column and use plt.figure()to initiate a new figure for each plot.
如果您想为每列创建一个单独的图，那么您可以遍历每一列并用于plt.figure()为每个图启动一个新图。
import matplotlib.pyplot as plt
for column in df:
plt.figure()
df.boxplot([column])
If you want to just put all columns into the same boxplot graph then you can just use df.plot(kind='box')
如果您只想将所有列放入同一个箱线图，那么您可以使用 df.plot(kind='box')
