谢谢楼上各位,问题还是没解决。请问大家自己运行程序提供的例子吗?
. sysuse auto
. reghdfe price weight (length=head), absorb(rep78)
我运行后系统提示
(converged in 1 iterations)
option sdofminus() not allowed
如果用ivreghdfe运行系统提示
struct ms_vcvorthog undefined
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