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* Example generated by -dataex-. To install: ssc install dataex clear input int id float(date_dx time) 1 16875 1 1 . 2 1 . 3 1 . 4 1 . 5 2 16967 1 2 . 2 2 . 3 2 . 4 2 . 5 3 13680 1 3 . 2 3 . 3 3 . 4 3 . 5 end format %dM_d,_CY date_dx
* Example generated by -dataex-. To install: ssc install dataex clear input int id float(date_dx time) 1 16875 1 1 . 2 1 . 3 1 . 4 1 . 5 2 16967 1 2 . 2 2 . 3 2 . 4 2 . 5 3 13680 1 3 . 2 3 . 3 3 . 4 3 . 5 end format %dM_d,_CY date_dx
. bys id (time): gen byte first=id!=id[_n-1] . bys id (time): gen byte last=id!=id[_n+1] . li, clean noo id date_dx time first last 1 March 15, 2006 1 1 0 1 . 2 0 0 1 . 3 0 0 1 . 4 0 0 1 . 5 0 1 2 June 15, 2006 1 1 0 2 . 2 0 0 2 . 3 0 0 2 . 4 0 0 2 . 5 0 1 3 June 15, 1997 1 1 0 3 . 2 0 0 3 . 3 0 0 3 . 4 0 0 3 . 5 0 1
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