我的stata12在升级前还好,升级后运行xtthres命令出现如下错误:
tsset code year
panel variable: code (strongly balanced)
time variable: year, 1978 to 2010
delta: 1 unit
. xtthres dlcr ktl,thres(year) d(soeshare)
Begin Time :31 Dec 2012 14:24:07
You must tsset your data before using xtthres,see help xtthres.
. version 10
. xtthres dlcr ktl,thres(year) d(soeshare)
Begin Time :31 Dec 2012 14:24:16
You must tsset your data before using xtthres,see help xtthres.
声明版本后也不行,请问怎么办?


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