从具有多索引列的Pandas DataFrame创建箱形图

import pandas as pd
import matplotlib.pyplot as plt

# 创建一个具有多索引列的DataFrame
data = {
    ('A', 'x'): [1, 2, 3, 4, 5],
    ('A', 'y'): [2, 3, 4, 5, 6],
    ('B', 'x'): [3, 4, 5, 6, 7],
    ('B', 'y'): [4, 5, 6, 7, 8]
}
index = ['group1', 'group2', 'group3', 'group4', 'group5']
df = pd.DataFrame(data, index=index)

# 绘制箱形图
df.boxplot()
plt.title('Box Plot of Multi-index DataFrame')
plt.show()

df.boxplot(whis=1.5)
plt.title('Box Plot with Adjusted Whiskers')
plt.show()

plt.figure(figsize=(10, 6))
df.boxplot()
plt.title('Box Plot with Adjusted Figure Size')
plt.show()

df.groupby(level=0).boxplot()
plt.title('Box Plot by Group')
plt.show()