seaborn 简单热图示例

# coding: utf-8
import seaborn as sns
import matplotlib.pyplot as plt
import numpy as np

plt.rcParams['font.sans-serif'] = ['SimHei']
plt.rcParams['axes.unicode_minus'] = False

# 随机矩阵
data = np.random.rand(4, 4)  # 4x4 随机数据
sns.heatmap(data, annot=True, cmap="viridis")  # annot显示数值
plt.title("热图")

plt.show()