问题描述
数据（不是全部，我包括了 2 个州，科罗拉多是治疗，阿肯色是对照）
unit.num year name Y X1
36 5 2000 arkansas 6.08529569 NA
37 5 2001 arkansas 5.27572930 6.08529569
38 5 2002 arkansas 5.39556315 5.27572930
39 5 2003 arkansas 5.76185695 5.39556315
40 5 2004 arkansas 5.70974286 5.76185695
41 5 2005 arkansas 6.50822319 5.70974286
42 5 2006 arkansas 7.26496681 6.50822319
43 5 2007 arkansas 6.95066084 7.26496681
44 5 2008 arkansas 5.74002089 6.95066084
45 5 2009 arkansas 5.97201850 5.74002089
46 5 2010 arkansas 4.83552692 5.97201850
47 5 2011 arkansas 5.44142359 4.83552692
48 5 2012 arkansas 5.96183948 5.44142359
49 5 2013 arkansas 5.27107340 5.96183948
50 5 2014 arkansas 5.15546247 5.27107340
51 5 2015 arkansas 6.00992410 5.15546247
52 5 2016 arkansas 7.08932889 6.00992410
53 5 2017 arkansas 7.95871591 7.08932889
54 8 2000 colorado 3.09689038 NA
55 8 2001 colorado 3.41189967 3.09689038
56 8 2002 colorado 4.03081592 3.41189967
57 8 2003 colorado 4.19543484 4.03081592
58 8 2004 colorado 4.72129806 4.19543484
59 8 2005 colorado 3.82133592 4.72129806
60 8 2006 colorado 3.72847942 3.82133592
61 8 2007 colorado 3.35146594 3.72847942
62 8 2008 colorado 3.27216431 3.35146594
63 8 2009 colorado 3.31845392 3.27216431
64 8 2010 colorado 2.88316463 3.31845392
65 8 2011 colorado 3.26059092 2.88316463
66 8 2012 colorado 2.98437286 3.26059092
67 8 2013 colorado 3.52908899 2.98437286
68 8 2014 colorado 3.08341017 3.52908899
69 8 2015 colorado 3.46654972 3.08341017
70 8 2016 colorado 4.02460169 3.46654972
71 8 2017 colorado 4.14893280 4.02460169
我从 44 个状态开始，这是我选择控制组和治疗组的一些代码
# vector to denote control and treatment identifiers
controlid = c(1:56)
controlid =controlid[-53] # washington
controlid =controlid[-52]
controlid =controlid[-43]
controlid =controlid[-41]
controlid =controlid[-32]
controlid =controlid[-14]
controlid =controlid[-11:-12]
controlid =controlid[-8] # colorado
controlid =controlid[-6:-7]
controlid =controlid[-2:-3]
# create matrices from panel data that provide inputs for synth()
dataprep.out<-
dataprep(
foo = formatted_synth_data,predictors = "X1",predictors.op = "mean",dependent = "Y",unit.variable = "unit.num",time.variable = "year",treatment.identifier = 8,controls.identifier = controlid,time.predictors.prior = c(2000:2013),time.optimize.ssr = c(2000:2013),unit.names.variable = "name",time.plot =2000:2017 # total data 2000:2017
)
错误
数据准备错误(foo = Synthdata,predictors = "murder_pop_lagged",:
您的面板，如 unit.variable 和 time.variable 所述，是不平衡的。平衡它并再次运行。
解决方法
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