本人用STATA做门限回归,当使用命令xtptm y x1 x2, rx(x3) thrvar(x4) iters(500) regime(2)后出现下列错误提示:
I(): 3900 unable to allocate real <tmp>[11953,11953]
ptm(): - function returned error
<istmt>: - function returned error
r(3900);
这是怎么回事啊?
请哪位高手予以解答,谢谢了!