Hi all,
I have a dataframe that has one observation per case.
for example:
Case Startyear Endyear
A 1979 1989
B 1950 1955
I would like to create a dataframe in which each case has
multiple observations corresponding to the start and end year
for example
Case Year
A 1979
A 1980
A 1981
. .
. .
. .
A 1989
B 1950
B 1951
and so on
any help would be greatly appreciated.
Joe
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