Dear all:
Suppose, I have the following data:
id x
1 1
1 1
1 1
1 1
1 0
1 0
1 1
1 1
2 1
..
Now, I would like to generate a variable _y _such that _y_ takes the
ordering value of 1, 2, 3... as long as the corresponding _x_ takes
the same value as the previous observation. Otherwise, _y_ is 0.
Specifically, from the above data, we have:
id x y
1 1
1 1 1
1 1 2
1 1 3
1 0 0
1 0 1
1 1 0
1 1 1
2 1 2
..
Can you suggest a way to do this in Stata?
--
"My father gave me the greatest gift anyone could give another person,
he believed in me." - Jim Valvano
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