how can I create a dummy variable for each Partner if my observations are pairs of countries like this:
| Exporter | Importer | Year | Trade |
| Country | Partern 1 | 1990 | Valor |
| Country | Partner 2 | 1990 | Valor |
| Partner 1 | Country | 1990 | Valor |
| Partner 2 | Country | 1990 | Valor |
| Country | Partner 1 | 1991 | Valor |
0 Response to create a dummy pair of countries
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