----------------------- copy starting from the next line -----------------------
- * Example generated by -dataex-. To install: ssc install dataex
- clear
- input long code int year double y
- 4 2013 1000000
- 4 2015 3000000
- 4 2016 4000000
- 5 2016 1.300e+08
- 6 2012 2.700e+08
- end
----------------------- copy starting from the next line -----------------------
- * Example generated by -dataex-. To install: ssc install dataex
- clear
- input long code int year double k
- 4 2012 -900000
- 4 2014 -5000000
- 5 2012 -35000000
- 5 2013 -30000000
- 5 2014 -25000000
- end
我想就是code 一样的情况下,year按照年份顺序排列


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