Ipolate & Epolate- two identification variables

[ALICIA CECHIN]

Hi Stata users, I have a data set from 2000 to 2016 with some missing values for both dependent and independent variables. My data is divided by state, year and industrial sector. I need to interpolate (extrapolate) using industrial sector and state as identifier. How should I write the command in my dofile?

[Nick Cox]

I see no syntactical problem with

bysort state sector (year) : ipolate whatever year, gen(guess)