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Re: st: FW: add 3 quarters

From   Nick Cox <>
Subject   Re: st: FW: add 3 quarters
Date   Wed, 2 May 2012 20:19:06 +0100

You could use -expand- for this. But if every variable but time is
unchanged, what's the point?

If this is preparatory to a -merge- with a dataset of quarterly data,
-merge- will do the work for you.


On Wed, May 2, 2012 at 8:10 PM, Agnieszka Trzeciakiewicz
<> wrote:

> I have a dataset which contains an information on individuals and traces the
> period of a record in quarters.
> There are two variables in the dataset: “ID”, and “time”
> I would like to generate additional 4 rows for each observation, and the
> only variable that I need to change with added rows  is time variable which
> should equal  time – 1quarter, time -2 quarters,, time-3 quarters and time
> -4 quarters.

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