虽然不清楚你为什么要这样运用计量,但仅作为编程的练习,给你个示范代码吧
sysuse auto, clear
macro drop _all
forvalue i=1/10{
forvalue j=1/10{
quietly reg price mpg if _n!=`i' & _n!=`j'
local r`i'`j' = e(r2)
display `i' `j' `r`i'`j''
}
}