【2.1.1】柱状图（seaborn-barplot）

四、我的案例

4.1 自定义bar的颜色

import pandas as pd 
import matplotlib.pyplot as plt
import seaborn as sns

df_all = df_3

fig = plt.figure(figsize=(16, 10), dpi= 80)

custom_palette = ["red", "blue", "green"] # 这里定义的颜色和hue对应
ax = sns.barplot(data=df_all, x="protein", y="expression",hue="Note", palette=custom_palette) # 


ax.legend(loc='upper center', shadow=True, fontsize='20')

plt.xlabel('', size=30)
plt.ylabel('In vitro expression of A549', size=30)
plt.xticks(fontsize=25) #,rotation=45
plt.yticks(fontsize=25)