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Re: st: How to generate variables by period


From   Nick Cox <njcoxstata@gmail.com>
To   statalist@hsphsun2.harvard.edu
Subject   Re: st: How to generate variables by period
Date   Mon, 11 Feb 2013 19:25:55 +0000

No loop needed.

bysort period : gen bench = 4/_N

On Mon, Feb 11, 2013 at 7:18 PM, Xixi Lin <winnielxx@gmail.com> wrote:

> I want to generate a benchmark, which equals 4/n, while n is the
> number of observations and changes for each period out of 120 periods.
> For example,
> period 1: n=2000, benchmark=4/2000
> period 2: n=3000, benchmark=4/3000
> ......
> period 120: n=1800, benchmark=4/1800
>
> How can I generate this benchmark more efficiently, for instance, write a loop?
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