pandas 散射矩阵显示相关系数 [英] pandas scatter matrix display correlation coefficient

问题描述

我试图找到一种方法来显示大熊猫散布矩阵的下三角或上三角的相关系数-有人可以将我指向正确的方向吗?谢谢.

I've tried to find a way to display correlation coefficients in the lower or upper tri of a pandas scatter matrix - can someone point me in the right direction? Thank you.

推荐答案

有效的最小示例

import matplotlib.pyplot as plt
import pandas as pd
import numpy as np
from pandas.plotting import scatter_matrix
df = pd.DataFrame(np.random.randn(100, 4), columns=['a', 'b', 'c', 'd'])
axes = scatter_matrix(df, alpha=0.5, diagonal='kde')
corr = df.corr().as_matrix()
for i, j in zip(*plt.np.triu_indices_from(axes, k=1)):
    axes[i, j].annotate("%.3f" %corr[i,j], (0.8, 0.8), xycoords='axes fraction', ha='center', va='center')
plt.show()

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