Use -egen, group() label- or -egen, concat()-. Also study
FAQ . . . . . . . . . . . . . . . . . . . . . . Creating group identifiers
3/01 How do I create individual identifiers numbered
from 1 upwards?
http://www.stata.com/support/faqs/data/group.html
Nick
[email protected]
SERGIO M. AFCHA CHÁVEZ
I have a little problem merging a data base. I have variables for 3
years showing an ID:
V1 V2 V3
1 . 1
2 . 2
3 3 3
4 4 .
. 5 5
6 . 6
I need only one ID variable. How can I obtain one column with all the
ID numbers?
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