variable id does not uniquely identify the observations
Your data are currently wide. You are performing a reshape long. You specified i(id) and j(year). In the current wide form, variable
id should uniquely identify the observations. Remember this picture:
long wide
+---------------+ +------------------+
| i j a b | | i a1 a2 b1 b2 |
|---------------| |------------------|
| 1 1 1 2 | | 1 1 3 2 4 |
| 1 2 3 4 | | 2 5 7 6 8 |
| 2 1 5 6 | +------------------+
| 2 2 7 8 |
+---------------+
Type reshape error for a list of the problem observations.
为什么我输进命令之后显示这个,之前有个数据输进命令可以转换,但这次怎么输也出来这些提示,求指教。
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