黃河泉 发表于 2016-11-18 17:26 
不太可能吧？请将指令写出来，以便侦错！
黄教授，您好，特别开心能看到您的回复，我在6月份的时候在湖南大学还听过您的演讲！！！这是我的指令xtpmg D.gd D.c D.lo D.lm D.k w , lr(w gd c lo lm k ) ec(E) pmg 其实我是个stata小白，lr这部分其实我自己也不是特别明白，谢谢指教喽 xtpmg D.gd D.c D.lo D.lm D.k w , lr(w gd c lo lm k ) ec(E) pmg
initial values not feasible
r(1400);
end of do-file
r(1400);
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[P] error . . . . . . . . . . . . . . . . . . . . . . . . Return code 1400
numerical overflow;
You have attempted something that, in the midst of the
necessary calculations, has resulted in something too large
for Stata to deal with accurately. Most commonly, this is
an attempt to estimate a model (say with regress) with more
than 2,147,483,647 effective observations. This effective
number could be reached with far fewer observations if you
were running a frequency-weighted model.
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谢谢啦
