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"factor-variable and time-series operators not allowed" bug? #1

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gerardosm opened this issue May 17, 2022 · 2 comments
Open

"factor-variable and time-series operators not allowed" bug? #1

gerardosm opened this issue May 17, 2022 · 2 comments

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@gerardosm
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Hi,

I am trying to run this program with fixed effects dummies using the i.identifier notation, but I am getting a "factor-variable and time-series operators not allowed" error. It looks like the preliminaries section of the estimator code is missing a fvexpand command in the trim("`varcoef'")=="" case, but I am hardly an expert in stata and could be wrong.

Best,

Gerardo

@a-torgovitsky
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@d-benson what do you think? I guess a workaround is to create the fixed effect dummies manually.

@AlanLee1017
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Hi,
I am also trying to run this program with fixed effects dummies using the i.identifier notation, and I can achieve it by adding "xi:" before the ivcrc comand. Luckily, I also found that ivcrc can be followed by a "fe" after the comma, like this "ivcrc y (x=z), fe", but there is no explanation in the help document . So, does the "fe" represent the fixed effect?
Thanks

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