17 lines
475 B
Plaintext
17 lines
475 B
Plaintext
clear
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cd e:\chililabdata\data
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use inmigration
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replace img_date=img_date/86400000
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format img_date %td
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gen year = year( img_date)
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gen h = halfyear(img_date)
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gen round = yh(year,h)-89
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tostring round, generate(rounds)
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replace rounds = "0" + rounds if strlen(rounds) ==1
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gen socialkey = socialgpid+ rounds
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gen individkey = individid+ rounds
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drop EID h socialgpidGuid rounds eventid observeid year
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duplicates drop individkey, force
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drop if round < 0
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save rImmigration, replace
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