Yes, Nick. I was confusing it with -egen-. Thank you. And thanks (and
sorry!) to you too, Michael!
Adrian
> -----Original Message-----
> From: Nick Cox [mailto:n.j.cox@durham.ac.uk]
> Sent: Monday, May 03, 2004 3:21 PM
> To: statalist@hsphsun2.harvard.edu
> Subject: SPAM: RE: st: Re: Cumulative sum
>
>
> Michael is correct. Your guess is not!
>
> Perhaps you are confusing the function -sum()-
> with the -egen- function -sum()-.
>
> Nick
> n.j.cox@durham.ac.uk
>
> de la Garza, Adrian
>
> > I don't think that gives me the cumulative sum, does it? It
> > gives me the
> > overall sum by country. That is, for every observation for which the
> > country is the same, I will get the same 'sum' variable, if I
> > do it that
> > way...
>
> Michael Blasnik
>
> > > no loop needed...
> > >
> > > by country: gen cum_amount=sum(amount)
>
> de la Garza, Adrian
>
> > > > I would like to create a variable that gives me the
> > cumulative of an
> > > > amount by country, like so:
> > > >
> > > > country year quar amount cum_amount
> > > > Argentina 1990 1 100 100
> > > > Argentina 1990 2 50 150
> > > > Argentina 1990 2 25 175
> > > > Argentina 1990 2 100 275
> > > > Argentina 1990 3 200 475
> > > > ...
> > > > Bolivia 1990 1 25 25
> > > > Bolivia 1990 1 30 55
> > > > ...
> > > >
> > > > Does anyone know a command that would do this without
> > > needing to write a
> > > > loop?
>
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