常用命令
ipolate可以用于線性插值和外推
webuse ipolxmpl2, clear
by magazine: ipolate circ year, gen(icirc) //線性內(nèi)推
by magazine: ipolate circ year, gen(icirc) epolate //線性外推少孝,比如你的缺失值在頂點
ipolate可以用于線性插值和外推
webuse ipolxmpl2, clear
by magazine: ipolate circ year, gen(icirc) //線性內(nèi)推
by magazine: ipolate circ year, gen(icirc) epolate //線性外推少孝,比如你的缺失值在頂點