python画热力图_python绘制热力图heatmap

本文实例为大家分享了python绘制热力图的具体代码，供大家参考，具体内容如下

python的热力图是用皮尔逊相关系数来查看两者之间的关联性。

#encoding:utf-8

import numpy as np

import pandas as pd

from matplotlib import pyplot as plt

from matplotlib import cm

from matplotlib import axes

import pylab

pylab.mpl.rcParams['font.sans-serif'] = ['SimHei']#防止中文乱码

pylab.mpl.rcParams['axes.unicode_minus'] = False#防止中文乱码

def draw_heatmap(data,xlabels,ylabels):

cmap = cm.Blues

figure=plt.figure(facecolor='w')

ax=figure.add_subplot(2,1,1,position=[0.1,0.15,0.8,0.8])

ax.set_yticks(range(len(ylabels)))

ax.set_yticklabels(ylabels)

ax.set_xticks(range(len(xlabels)))

ax.set_xticklabels(xlabels)

vmax=data[0][0]

vmin=data[0][0]

for i in data:

for j in i:

if j>vmax:

vmax=j

if j

v