请问老出现mata set matafavor space, perm要怎么解决呢？
xtabond2 price L(1/2).price L(0/1).gb t bsl tg jz tran tsa pr gr wyf gd purchase sale,gmm(price,lag (2 4)) gmm(gb t bsl tg jz tran tsa pr gr wh f gdp purchase sale,lag (2 2)) iv (purchase sale) nolevel twostep robust
Favoring speed over space. To switch, type or click on mata: mata set matafavor space, perm.
No observations.
r(2000);