gen reign = 0<br>
replace regin = 1 if city == “北京市”<br>
replace regin = 1 if city == “天津市”<br>
replace regin = 1 if city == “石家庄市”<br>
replace regin = 1 if city == “唐山市” <br>
replace regin = 1 if city == “秦皇岛市” <br>
replace regin = 1 if city == “邯郸市” <br>
replace regin = 1 if city == “邢台市” <br>
replace regin = 1 if city == “保定市” <br>
replace regin = 1 if city == “张家口市” <br>
replace regin = 1 if city == “承德市” <br>
replace regin = 1 if city == “沧州市” <br>
replace regin = 1 if city == “廊坊市” <br>
replace regin = 1 if city == “衡水市” <br>
replace regin = 1 if city == “上海市”<br>
replace regin = 1 if city == “南京市”<br>
replace regin = 1 if city == “无锡市”<br>
replace regin = 1 if city == “徐州市”<br>
replace regin = 1 if city == “常州市”<br>
replace regin = 1 if city == “苏州市” <br>
replace regin = 1 if city == “南通市”<br>
replace regin = 1 if city == “连云港市”<br>
replace regin = 1 if city == “淮安市”<br>
replace regin = 1 if city == “盐城市” <br>
replace regin = 1 if city == “扬州市”<br>
replace regin = 1 if city == “镇江市” <br>
replace regin = 1 if city == “泰州市”<br>
replace regin = 1 if city == “宿迁市”<br>
replace regin = 1 if city == “杭州市”<br>
replace regin = 1 if city == “宁波市”<br>
replace regin = 1 if city == “温州市”<br>
replace regin = 1 if city == “嘉兴市” <br>
replace regin = 1 if city == “湖州市”<br>
replace regin = 1 if city == “绍兴市”<br>
replace regin = 1 if city == “金华市”<br>
代码是这样的,但是总是错<br>
我是对十年面板数据进行异质性分析,弄不对代码,家人们这个代码有啥问题,谢谢家人们<br>