使用日期范围 - 在面板中创建一个标志

Question

I have two datasets:我有两个数据集：

Panel - years from 2010 to 2020面板 - 从 2010 年到 2020 年
Ranges for each firm (one or many) when they took a loan - also the range indicates the loan duration每个公司（一个或多个）在获得贷款时的范围 - 该范围还表示贷款期限

First can look like this (each company has all the year-observation records):首先可以是这样的（每个公司都有所有的年度观察记录）：

Second can look like this (so all variety, a company can have all years with a loan, some gaps in the beginning and in the end):第二个可以是这样的（所以各种各样，一家公司可以有所有年的贷款，在开始和结束时都有一些差距）：

   id start end
   1  2010  2011
   1  2011  2014
   1  2017  2018
   1  2012  2020
   2  2014  2018
   3  2011  2012
   3  2015  2018
   3  2018  2020
   4  2011  2012
   4  2015  2018
   4  2010  2018

The idea is to merge the two, so each company gets 0 or 1 for a year, 1 if there was a loan that year (so any of the ranges matching), and 0 if a company didn't have a loan that year.想法是将两者merge ，因此每家公司在一年中得到 0 或 1，如果当年有贷款（因此任何范围匹配）则为 1，如果公司当年没有贷款则为 0。

Example company based on the above would look like this:基于以上内容的示例公司如下所示：

   id  year  flag
   3   2010    0
   3   2011    1
   3   2012    1
   3   2013    0
   3   2014    0
   3   2015    1
   3   2016    1
   3   2017    1
   3   2018    1
   3   2019    1
   3   2020    1

Hope that makes sense.希望这是有道理的。 I tried inrange() but there are too many different scenarios and my code gets messy, thought there is a simple and clean way to do it.我尝试inrange()但有太多不同的场景，我的代码变得混乱，认为有一种简单干净的方法可以做到这一点。

Answer 1

If you work on the second dataset, you can get something fit to merge with your main dataset.如果您处理第二个数据集，则可以获得merge与主数据集合并的内容。

clear 
input id start end
1  2010  2011
1  2011  2014
1  2017  2018
1  2012  2020
2  2014  2018
3  2011  2012
3  2015  2018
3  2018  2020
4  2011  2012
4  2015  2018
end 

gen long ID = _n 
gen toexpand = end - start + 1
expand toexpand 
bysort ID : gen year = start + _n - 1 
drop start end ID toexpand 
duplicates drop id year, force 
sort id year 
list, sepby(id)

    +-----------+
     | id   year |
     |-----------|
  1. |  1   2010 |
  2. |  1   2011 |
  3. |  1   2012 |
  4. |  1   2013 |
  5. |  1   2014 |
  6. |  1   2015 |
  7. |  1   2016 |
  8. |  1   2017 |
  9. |  1   2018 |
 10. |  1   2019 |
 11. |  1   2020 |
     |-----------|
 12. |  2   2014 |
 13. |  2   2015 |
 14. |  2   2016 |
 15. |  2   2017 |
 16. |  2   2018 |
     |-----------|
 17. |  3   2011 |
 18. |  3   2012 |
 19. |  3   2015 |
 20. |  3   2016 |
 21. |  3   2017 |
 22. |  3   2018 |
 23. |  3   2019 |
 24. |  3   2020 |
     |-----------|
 25. |  4   2011 |
 26. |  4   2012 |
 27. |  4   2015 |
 28. |  4   2016 |
 29. |  4   2017 |
 30. |  4   2018 |
     +-----------+

After the merge 1:1 id year it is merge 1:1 id year之后是

gen flag = _merge == 3 
```

使用日期范围 - 在面板中创建一个标志

问题描述

1 个解决方案

解决方案1
1 已采纳 2023-01-23 19:34:29

使用日期范围 - 在面板中创建一个标志

问题描述

1 个解决方案

解决方案1 1 已采纳 2023-01-23 19:34:29

解决方案1
1 已采纳 2023-01-23 19:34:29