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Re: st: Average when -inrange()-


From   Nick Cox <njcoxstata@gmail.com>
To   statalist@hsphsun2.harvard.edu
Subject   Re: st: Average when -inrange()-
Date   Thu, 17 Nov 2011 23:33:25 +0000

Just use the same -if- condition together with -summarize-. Same idea
of initialising a variable before the loop and -replace- within the
loop.

Nick

On Thu, Nov 17, 2011 at 10:06 PM, Joseph Monte <hmjc66@gmail.com> wrote:
> Dear Statalisters,
>
> The code below gives me the number of observations (i.e. count1) when
> "date2" occurs between two dates - "ninetydaysbefore" and "date1" -
> based on "group". I also need the average of another variable called
> "price" of the observations that are counted. I am not sure how to
> incorporate it within the loop below.
>
> sort group date2
> gen count1=.
> qui forval i = 1/`=_N'{
>    count if group==group[`i'] & inrange(date2,ninetydaysbefore[`i'],date1[`i'])
>        replace count1 = r(N) in `i'
>        }
>
> I am using Stata 12.
>
> Thanks,
>
> Joe
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