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st: creating new id variable


From   A Muhyidin <cakalie.a@gmail.com>
To   statalist@hsphsun2.harvard.edu
Subject   st: creating new id variable
Date   Tue, 28 Aug 2012 11:08:12 +0900

Dear Statalisters,

I am trying to make a new id based on the two previous id, but so far
without any luck.
The new id that I'd like to make should be 4 digits, 2 digits from id1
and and 2 digits from id2.
If id2 consists of 1 digit number, I would like to add zero before the
last number to make new_id as 4 digits.
Any help would be appreciated.


|        id1   id2|     new_id
     |------------|
  1. |   11     1 |   1101
  2. |   11     5 |   1105
  3. |   11     8 |   1108
  4. |   11     9 |   1109
  5. |   11    10 |   1110
     |------------|
  6. |   11    14 |   1114
  7. |   11    15 |   1115
  8. |   11    16 |   1116
  9. |   11    17 |   1117
 10. |   11    18 |   1118
     +------------+

Thanks.

Best,



A Muhyidin
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