十分抱歉,我也不清楚为什么上一条复制没有变成标准格式,我重新编辑一下问题。下面是面板数据的一部分,每一个城市的05-10年的gdp缺失(...是缺失的),接下去的一个来自另外一个表,包含了对应年份对应城市的gdp,我想的是用merge city year 来精确匹配,但是gdp等数据没有匹配进去。打扰老师了,很愧疚。
----------------------- copy starting from the next line -----------------------
- * Example generated by -dataex-. To install: ssc install dataex
- clear
- input str18 city int year long gdp
- "万源市" 1993 52959
- "万源市" 1994 81503
- "万源市" 1995 101918
- "万源市" 1996 126605
- "万源市" 1997 119922
- "万源市" 1998 122506
- "万源市" 1999 120420
- "万源市" 2000 136094
- "万源市" 2001 149273
- "万源市" 2002 168889
- "万源市" 2003 193851
- "万源市" 2004 252356
- "万源市" 2005 .
- "万源市" 2006 .
- "万源市" 2007 .
- "万源市" 2008 .
- "万源市" 2009 .
- "万源市" 2010 .
- "万源市" 2011 787175
- "万源市" 2012 1008511
- "万源市" 2013 1083782
- "万源市" 2014 1169883
- "三台县" 1993 186484
- "三台县" 1994 254077
- end
复制代码
------------------ copy up to and including the previous line ------------------
这是含有gdp(第三列)的另一个表的部分----------------------- copy starting from the next line -----------------------
- * Example generated by -dataex-. To install: ssc install dataex
- clear
- input str12 city int year long gdp
- "万源市" 2002 186226
- "万源市" 2003 208313
- "万源市" 2004 239045
- "万源市" 2005 272084
- "万源市" 2006 318000
- "万源市" 2007 407750
- "万源市" 2008 478509
- "万源市" 2009 524734
- "万源市" 2010 617860
- "万源市" 2011 753605
- "万源市" 2012 881685
- "三台县" 2002 362242
- "三台县" 2003 401534
- "三台县" 2004 493393
- "三台县" 2005 518362
- "三台县" 2006 601331
- "三台县" 2007 756309
- "三台县" 2008 978268
- end
复制代码
------------------ copy up to and including the previous line ------------------
Listed 18 out of 18 observations
.