RE: st: Create the count of occurances in a panel

["Nick Cox" <n.j.cox@durham.ac.uk>]

Yet another way is 

egen totobs = sum(1), by(id) 

(what is the observation number? 1 + 1 + 1 + ...)

or -- for slightly more subtle reasons -- 

egen totobs = count(1), by(id) 

Nick 
n.j.cox@durham.ac.uk 

Svend Juul
  
> bysort id: generate nobs=_n
> bysort id: generate totobs=_N

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