On Jan 13, 2009, at 6:28 AM, Sharooon wrote:
I have a data set with the following format:
id date price
1 1 400
2 1 500
2 2 450
2 3 450
3 2 600
3 3 .
Where I have multiple id's observed at different dates, and not
necessarily the same date. What I would like, is to delete all but
the most recent date and fill in the price with the most recent
price observed.
bys id (date): replace price = price[_n-1] if mi(price)
bys id (date): keep if _n==_N
-- Phil
P.S. You could, if you want, follow this with
keep if !mi(price)
if you didn't want a record for those ids where there never was a non-
missing value of price.
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