Dear Giovanni
Thank you for the quick reply and sorry for not being able to respond
in kind: since our last e-mail we decided to change the way we measure
the variables, and this took some time. I managed to track down the
original issue, I think, to an improperly specified subset vector to
the
Dear all
I am working on unbalanced panel data and I can readily fit a
pooling model using plm(), but not a within or random model.
Reproducing the examples in vignette(plm) and in the AER package I
encountered no such issues.
##unfortunately I cannot disclose the data, and it is too big anyway
Dear Liviu,
it's difficult to tell without seeing the data. I might guess that you have
some completely empty groups about which Tapply complains when doing the
time-demeaning, but it would be just a guess.
I realize you can't share the data in the present form, but may I suggest you
try and
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