Please make sure that the subject line is informative; it increases the
chances that someone reads you mail.
Here is a workable solution:
------------------------------------------------
clear
input var1 var2 var3
80 30 1
75 30 1
85 30 1
76 33 1
78 33 1
75 33 1
80 29 2
82 29 2
83 29 2
end
// You ought to have an id variable from the beginning,
// but assuming that each individual has exactly three
// measurements and that the sorting is right,
// you can create one (var4).
// I add 2.1 (not 2) to avoid rounding errors:
generate var4=floor((_n+2.1)/3)
// This creates the observation number within id (var4):
bysort var4: gen var5=_n
list
------------------------------------------------
Hope this helps
Svend Juul
__________________________________________
Svend Juul
Institut for Epidemiologi og Socialmedicin
(Dept. Epidemiology and Social Medicine)
Vennelyst Boulevard 6
DK-8000 Aarhus C, Denmark
Phone: +45 8942 6090
Home: +45 8693 7796
Email: [email protected]
__________________________________________
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