Greetings!
I have checked the references as well as the Statalist archive, but couldn't
seem to find a solution to this. I was trying to find some command that
works like a "running" count function; that is, it will give the number of
unique occurences from 1 to _n. For example: variable x is as follows:
x
cd1
cd2
cd2
cd2
cd1
cd3
cd4
cd1
cd5
cd3
And I was trying to generate a variable -y- such that
x y
cd1 1
cd2 2
cd2 2
cd3 3
cd1 3 //there are cd1, cd2 and cd3 before this
cd3 3
cd4 4
cd1 4
cd5 5
cd3 5
I am still learning Stata and was hoping that this does not have to be
solved by programming... Is there a command or package that works like this?
Many thanks!
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