非常感谢你的回复,这个我知道了,我想请问您如何把宏观数据和微观数据结合在一起呢?宏观数据是省份data1:
year area ts
2008 1 2.85245
2009 1 3.21451
2010 1 3.12859
2011 1 3.29467
2012 1 3.36758
2013 1 3.44334
2008 2 .630904
2009 2 .853886
2010 2 .875713
2011 2 .880391
2012 2 .909157
2013 2 .948926
2008 3 .612548
2009 3 .67728
微观数据是上市公司数据data2:
stock area soe fin style year
1 19 0 0 0 2013
2 19 1 1 0 2013
4 19 0 1 0 2013
5 19 0 1 0 2013
6 19 1 1 0 2013
7 19 0 1 0 2013
8 19 0 1 0 2013
9 19 0 1 0 2013
10 1 0 1 0 2013
11 19 1 1 0 2013
12 19 0 1 0 2013
14 19 1 1 0 2013
16 19 1 1 0 2013
17 19 0 1 0 2013
18 19 0 1 0 2013
19 19 1 1 0 2013
20 19 0 1 0 2013
21 19 1 1 0 2013
22 19 1 1 0 2013
23 19 0 1 0 2013
共同的变量是area year。非常感谢啊
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