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Re: st: Creating new variable from existing observations


From   Suryadipta Roy <sroy2138@gmail.com>
To   statalist@hsphsun2.harvard.edu
Subject   Re: st: Creating new variable from existing observations
Date   Sat, 9 Jun 2012 16:19:29 -0400

Nick,
I did read the FAQ, but missed the reversing time part. Reversing time
did the trick! Thank you so much!

Sincerely,
Suryadipta.

On Sat, Jun 9, 2012 at 1:51 PM, Nick Cox <njcoxstata@gmail.com> wrote:
> This is an FAQ. See
>
> FAQ     . . . . . . . . . . . . . . . . . . . . . . . Replacing missing values
>        . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  N. J. Cox
>        2/03    How can I replace missing values with previous or
>                following nonmissing values?
>                http://www.stata.com/support/faqs/data/missing.html
>
> For what you seem to want, you would need to reverse time.
>
>
> On Sat, Jun 9, 2012 at 6:47 PM, Suryadipta Roy <sroy2138@gmail.com> wrote:
>
>> I actually had another question relating to replacing missing
>> observations for panel data. My original dataset has been sorted by
>> exporter, importer, and year. I am trying the following to replace
>> missing observations for a variable for both importer and exporter by
>> a following value for one/more years:
>>
>> by importer exporter (year), sort: replace myvar = myvar[_n+1] if myvar >= .
>>
>> However, this only replaces the value for one previous year and leaves
>> the rest unchanged. Can anyone let me know how to fix this problem and
>> replace the missing value for all previous years for all exporters and
>> importers?
>>
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