Python基于matplotlib画箱体图检验异常值操作示例【附xls数据文件下载】

# -*- coding:utf-8 -*-#! python3import pandas as pdimport osimport matplotlib.pyplot as pltdata=pd.read_excel('catering_sale.xls',index_col='日期')plt.rcParams['font.sans-serif']=['SimHei']#正常显示中文plt.rcParams['axes.unicode_minus']=False#正常显示负号plt.figure(figsize=(8,8))p=data.boxplot(return_type='dict')x=p['fliers'][0].get_xdata()y=p['fliers'][0].get_ydata()y.sort()for i in range(len(x)):  if i>0:    plt.annotate(y[i],xy=(x[i],y[i]),xytext=(x[i]+0.05-0.8/(y[i]-y[i-1]),y[i]))  else:    plt.annotate(y[i],xy=(x[i],y[i]),xytext=(x[i]+0.8,y[i]))plt.show()