Python:如何在Seaborn Heatmap的定义值上将颜色条居中? [英] Python: How to centre a colorbar at a defined value for Seaborn Heatmap?

问题描述

我正在尝试使用seaborn绘制热图.因此，我的取值范围是0到5，我需要设定一个蓝色到红色的色标，白色为1，蓝色(低于1)，红色为1到5. 我该怎么办?

I am trying to plot a heatmap using seaborn. So, I have values from 0 to 5 and I need to make a blue-to-red color scale, with white being at 1, blue- below 1, and red - from 1 to 5. How can I do that?

import seaborn as sns; sns.set()
hm=sns.heatmap(proportion, vmin=0, vmax=5, cmap='RdBu')

这是我要尝试的操作，但这不是自定义的...比例"是我的变量.我有什么可以做的吗?

This is what I try to do, but it is not customized... 'proportion' is my variable. Is there anything I can do?

推荐答案

也许您是想使用center参数，

import matplotlib.pyplot as plt
import seaborn as sns
import numpy as np

data = np.random.rand(10,10)*5

ax = sns.heatmap(data, vmin=0,vmax=5,center=1,cmap="RdBu_r")

plt.show()

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