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Re: st: Creating a dummy variable under certain conditions


From   Nick Cox <njcoxstata@gmail.com>
To   statalist@hsphsun2.harvard.edu
Subject   Re: st: Creating a dummy variable under certain conditions
Date   Mon, 4 Jun 2012 09:41:24 +0100

bysort gvkey (date) : gen cuviol = sum(viol)
by gvkey : gen myindicator = (viol == 1) & (cuviol[_n-1] ==
cuviol[_n-4]) & _n > 4

Nick

On Mon, Jun 4, 2012 at 9:22 AM, sebas nicaise <sebasnicaise@hotmail.com> wrote:

> It is important that new viol dummy can only be 1 if viol is 1 and in the previous 4 quarters viol is 0.
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