Re: Re: st: AW: Question on xtreg and the FE option

[Christopher Baum <kit.baum@bc.edu>]

<>
Correction: I meant to say "Indeed, Stata had an -XTREG- command long before..."
That is, Stata understood panel data long before it had an explicit concept of a time series calendar.
As I mentioned earlier in that message, -XTSET- is a recent addition for convenience purposes.

Indeed, the online help for -xtset- contains, as a first example,

Examples

    Example with no time variable

    For a panel dataset with no time variable such as a dataset with variable country and observations
    on cities within country, type

            . xtset country


This may or may not be new documentation in Stata 12, but the functionality has been there as long as -xtreg- has been around.
help whatsnew9to10  shows that -xtset- was added to Stata in version 10, at the same time that -tsset- was upgraded to allow,
e.g., the delta() option and clocktime data.

Kit


Kit Baum   |   Boston College Economics & DIW Berlin   |   http://ideas.repec.org/e/pba1.html
                             An Introduction to Stata Programming  |   http://www.stata-press.com/books/isp.html
  An Introduction to Modern Econometrics Using Stata  |   http://www.stata-press.com/books/imeus.html


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