hello, I have been using fixedeffect function, but there's an error when I include two category variables(userid and time).
It shows 'NameError: Total sum of square equal 0, program quit.'
The function works well when I include only one of these two category variables.
Would you please check this out? thanks a lot.
hello, I have been using fixedeffect function, but there's an error when I include two category variables(userid and time).
It shows 'NameError: Total sum of square equal 0, program quit.'
The function works well when I include only one of these two category variables.
Would you please check this out? thanks a lot.