Seaborn and Matplotlib are used to visualize multi-class data with legends added.

 import numpy as np

    
 import pandas as pd
    
 import matplotlib
    
 import matplotlib.pyplot as plt
    
 import seaborn as sns
    
  
    
  
    
 #matplotlib默认不显示中文
    
 font = {'family':'MicroSoft YaHei','weight':'bold'}
    
 matplotlib.rc('font',**font)  #给matplotlib能够显示中文
    
  
    
  
    
 ####################################sns画图######################################################
    
 data = np.loadtxt('LDA处理后数据.csv', delimiter=',')
    
 y = [0]*5+[1]*5+[2]*5+[3]*5+[4]*5+[5]*5
    
  
    
 # 绘图方法三
    
 ##添加索引和标签
    
 Lnewdata = pd.DataFrame(data)
    
 ##给数据添