如何将统计注释(星号或 p 值)插入到 matplotlib/seaborn 图中?

问题描述

这似乎是一个微不足道的问题，但我已经搜索了一段时间，似乎无法找到答案.它似乎也应该成为这些包的标准部分.有谁知道是否有一种标准方法可以在 seaborn 的分布图之间包含统计注释?

This seems like a trivial question, but I've been searching for a while and can't seem to find an answer. It also seems like something that should be a standard part of these packages. Does anyone know if there is a standard way to include statistical annotation between distribution plots in seaborn?

例如，在两个框或群图之间?

For example, between two box or swarmplots?

推荐答案

这里是如何向 Seaborn 箱形图添加统计注释:

Here how to add statistical annotation to a Seaborn box plot:

import seaborn as sns, matplotlib.pyplot as plt

tips = sns.load_dataset("tips")
sns.boxplot(x="day", y="total_bill", data=tips, palette="PRGn")

# statistical annotation
x1, x2 = 2, 3   # columns 'Sat' and 'Sun' (first column: 0, see plt.xticks())
y, h, col = tips['total_bill'].max() + 2, 2, 'k'
plt.plot([x1, x1, x2, x2], [y, y+h, y+h, y], lw=1.5, c=col)
plt.text((x1+x2)*.5, y+h, "ns", ha='center', va='bottom', color=col)

plt.show()

结果如下:

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