




Dear all, How can I create an enumeration variable by groups?
 
I have: 
gender score  1 48  1 45  2 50  2 42  1 41  2 51  1 52  1 43  2 52
 
and Y would like to get:
 
        gender    score    index
         1        48       1
         1        45       2
         1        41       3
         1        52       4
         1        43       5
         2        50       1
         2        42       2
         2        51       3
         2        52       4
best regards
_________________________________________________________________

[[replacing trailing spam]]

	[[alternative HTML version deleted]]

