如何用python画下三角矩阵的相关热力图？sns.heatmap详解

python如何绘制下三角矩阵的热力图，先看一下效果图加载必要的包import pandas as pdimport numpy as npimport matplotlib.pyplot as pltimport seaborn as snsimport scipy.stats as stats from matplotlib.ticker import FormatStrFormatterencoding="utf-8"加载数据#读取数据data = pd.read_excel