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Re: st: how to aggregate data
From
Nick Cox <[email protected]>
To
[email protected]
Subject
Re: st: how to aggregate data
Date
Wed, 2 Nov 2011 08:22:10 +0000
. help collapse
Nick
On Wed, Nov 2, 2011 at 8:17 AM, fukugawa_nobuya <[email protected]> wrote:
> dear statalisters,
> i would like to know how to compress the original data as follows.
>
> ---original data---
>
> firm year age
> a 1999 19
> a 1999 25
> b 1998 65
> c 2010 56
> c 2010 58
> c 2010 54
>
> ---aggregated data---
> firm year age
> a 1999 22
> b 1998 65
> c 2010 56
>
> please note the number of rows will be reduced.
>
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