Thank you so much. It is very helpful.
Alan
With this dataset, -n- is not a valid identifier.
I don't know what it is, but
. su n
Variable | Obs Mean Std. Dev. Min Max
-------------+--------------------------------------------------------
n | 1031 1.056002 1.341506 -2.263364 4.687321
shows that it's not acceptable as an identifier.
Your command
. gen yr=y(1980)+_n-1,
options not allowed
r(101);
is failing because Stata sees the comma and -- as it is
telling you -- options are not allowed with -generate-, but the command
will fail anyway because y(1980) is not legal Stata.
I don't know anything about this dataset, but my guess
is that -id- is a suitable identifier.
Nick
[email protected]
Alan Williamson
> I use stata-press data of abdata to run xtabond. But I got
> message like:
>
> . use http://stata-press.com/data/r9/abdata
>
> . tis year
>
> . iis n
>
> . tsset n year
> repeated time values within panel
> r(451);
>
> . gen yr=y(1980)+_n-1,
> options not allowed
> r(101);
>
> . gen yr=year
>
> . tsset n yr
> repeated time values within panel
> r(451);
>
> In this case, are there any suggestions about how can I set
> the tsset properly for n m ys etc. please?
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