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| Error in nlsystemfit when use different instruments for each equation [ Reply ] By: Giornni Duarte on 2024-03-19 23:24 | [forum:49848] |
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I'm trying to estimate a non-linear set of (2) equations with 3SLS, with different sets of instruments for each equation. When I use just one set of instruments for both, I could estimate the model, but when I try to use two sets, I got an error: error evaluating argument 'x' when selecting method for function 'as.matrix': 'invalid formula' |
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