keeping the last observation only

[Muhammad Ibrahim Shah]

I have different individuals and want to keep the last observation only. any commands?

[Joseph Coveney]

Last observation of each individual? Then try

bysort pid (tim): keep if _n == _N

where pid is the person's identiffier and tim is a variable that increases with time. Otherwise, if the last observation overall, then try

sort tim, stable
keep in l

[Muhammad Ibrahim Shah]

Thanks!