stata的repeated time values within panel 在Stata中,"repeated time values within panel" 指的是面板数据中的重复时间值。具体来说,面板数据集通常包含每个个体的多个观察值,每个观察值都有自己的时间戳。如果在面板数据集中,某个个体在相同的时间点有多个观察值,这就意味着存在重复的时间值。例如,如果有两个...
duplicates drop code year duplicates drop code year , force 如图所示,解决 之后,构造面板数据,成功
repeated time values within panelr(451); 可见这两个字段是有重复项了,使用下面的命令查看问题所在 .duplicates list pac year 得到如下结果,可以看出是哪一行数据出现了问题 重复项 解决方法: 查看原始数据,筛选一下问题在哪,把原始数据中的重复项删除了,然后再来设置面板的两个字段 在当前文件的基础上利用drop...
而后我又继续找原因,找呀找,然后我发现导入stata中的原始数据又存在空值,然后又重新导入了一遍面板数据,但空值消失后依然报错...[○・`Д´・ ○],有点纳闷了,,, 继而,我又找来用了drop相关命令,这下终于把“repeated time values within panel”的报错给消除了,命令语句相对比较简单,最后结果是这样的,见...
数据 样本企业年份太多,会出现repeated time values within panel的报错问题 1、duplicates report 个体 年份 //检查个体-年份是否能唯一识别 2、duplicates example 个体 年份 //举例子看哪里数据重复 3、duplicates drop 个体 年份,force //强制删除重复数据 ...
repeated time values within panel r(451); What should I do next? Answer Panel data are defined by an identifier variable and a time variable. Each combination of identifier and time should occur, at most, once. That is, any such combination might appear either once or not at all, as ga...
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S458881 XTMIPOLATEU: Stata module to replace missing values in a time series, two- or multidimensional varlist with interpolated (extrapolated) ones byIlya Bolotov S458880 XTIMPORTU: Stata module to import monthly, quarterly, half-yearly or yearly time series and panel data as panelvar timevar...
导入面板数据时出现的问题1 repeated time values within panel 解决方法1 destring industry,replace duplicates report industry year duplicateslistindustry year duplicates drop industry year , force Duplicates in terms of industry year xtset industry year ...