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st: add observations
From
Ronnie Babigumira <[email protected]>
To
[email protected]
Subject
st: add observations
Date
Mon, 6 Aug 2012 14:25:44 +0200
Dear listers,
I have a dataset that looks like this
hcod pd pdt
3092285 1 31
3092285 1 43
3092285 2 11
3092285 2 21
3092285 2 41
3092285 2 45
3092285 3 42
I would like to add new observations so that I end up with
hcod pd pdt
3092285 1 31
3092285 1 43
3092285 2 11
3092285 2 21
3092285 2 41
3092285 2 45
3092285 3 42
3092285 4 31
3092285 4 43
3092285 4 11
3092285 4 21
3092285 4 41
3092285 4 45
3092285 4 42
Basically, each unit (hcod) should have 4 periods (pd). What we would like to do is add all products (pdt) present in the non-missing periods to the missing period.
Any suggestions to get us started would be very welcome.
Thanks
Ronnie
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