Dear all,
I have a very common panel data set. i is my individual identifier, t my
time variable and x is a categorical variable. I want to create a variable
that will be 1 for all the observations of the same individual after x is
reduced. ie I want to identify all the observations for the same individual
after a reduction on x has taken place. Note that a reduction does not
happen to all individuals.
In the following example I want my new variable to be 1 for observations 5,6
and 7.
+-----------+
i t x
-----------
1. 1 1 1
2. 1 2 1
3. 1 3 2
4. 1 4 2
5. 1 5 1
-----------
6. 1 6 2
7. 1 7 1
+-----------+
Thanks in advance
Nikos
__________________________________________________
�������������� Yahoo!;
���������� �� ���������� �������� (spam); �� Yahoo! Mail �������� ��� �������� ������ ��������� ���� ��� ����������� ���������
http://mail.yahoo.gr
*
* For searches and help try:
* http://www.stata.com/support/faqs/res/findit.html
* http://www.stata.com/support/statalist/faq
* http://www.ats.ucla.edu/stat/stata/
