I have a data looks as below:
Code:
* Example generated by -dataex-. To install: ssc install dataex clear input str1 id byte(time iv) "a" 1 10 "a" 2 20 "a" 3 30 "a" 4 40 "a" 5 50 "b" 1 12 "b" 2 13 "b" 3 14 "b" 4 15 "b" 5 16 end
I want to generate the lagged value for each of the row as below. The time variable here is not really a date and the dataset is not a real panel data. I wonder if anyone knows how to realize this?
Code:
* Example generated by -dataex-. To install: ssc install dataex clear input str1 id byte(time iv ivt_1 ivt_2) "a" 1 10 . . "a" 2 20 10 . "a" 3 30 20 10 "a" 4 40 30 20 "a" 5 50 40 30 "b" 1 12 . . "b" 2 13 12 . "b" 3 14 13 12 "b" 4 15 14 13 "b" 5 16 15 14 end
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