I dont have missing value, why R shows this error?

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David Eugene Booth

It might be helpful if you showed some code and some data

Best, D. Booth

BTW you did compute the values of the interaction variable, Right?

Jochen Wilhelm

Either lnl or initial.value or both are NA. Check why this is the case.

Samantha Curle

Will this thread help you -

https://stackoverflow.com/questions/45663766/r-mlogit-model-missing-value-where-true-false-needed-20-invalid-factor-level

Wanqi Wang

Many Thanks, Everyone, I have solved the problem, it was because missing value in the data frame.