Thank you Scott,
I found where my problem was. Another little question concerning xtdata,fe:
When I use it on the panel data set I want to regress afterwards, the <year>
variable is transformed, too. I can recover the old values using -int-, but
this does not seem the safest way to me. Is there a way of applying -xtdata-
to only a part of the dataset, and to retain some other variables (such as
<year>) in it?
This would also be useful for a variable I want to use in an -if- condition,
in its untransformed form. I found a way around this by dropping everything
that does not correspond to the -if- before using -xtdata-, but that demands
quite a lot of (unnecessary?) repetitions.
Thanks!
Markus Poschke
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