Hi,
I'm a new STATA user, so please apologize if this is a stupid question. I am
analyzing panel data and yesterday (when I first tried), it worked fine, and
I could use all the models. When I tried to run the model again it
remembered my choice of identifier and time variable.
Today, no matter what model I use, the identifier dissapears. That is, when
I run the model, I get and error message called "i() required". I have tried
to use the function "declare data set to be time-series data" and to press
the panel settings button on the xtlogit dialogue box and the xtreg dialogue
box.
Has anybody got a solution?
Greetings,
Morten
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