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Re: st: does -mf_panelsetup- need presorted a panel with a numerical panel id?
From
Nick Cox <[email protected]>
To
"[email protected]" <[email protected]>
Subject
Re: st: does -mf_panelsetup- need presorted a panel with a numerical panel id?
Date
Fri, 19 Jul 2013 00:16:35 +0100
I disagree on the lack of documentation. The help and manual entry for
-xtset- explain that panel identifiers must be numeric variables.
Why I do not know, but you cannot get far with panel data analysis in
Stata without satisfying this rule.
Nick
[email protected]
On 18 July 2013 23:11, László Sándor <[email protected]> wrote:
> A quick update: My code runs OK if I -tsset- and -sort- first on a
> numerical panel id. So this look like an undocumented requirement.
>
> It makes sense from Mata's capabilities, it is not there to collect
> row "panelid == same string", but it still would be nice to document.
>
> Thanks.
>
> On Thu, Jul 18, 2013 at 5:49 PM, László Sándor <[email protected]> wrote:
>> I am trying to troubleshoot what's wrong with my code under Stata/MP
>> 12.1 for Win 64 code.
>>
>> Perhaps it does not do its job if the st_view it works on does not
>> have a contiguous panels (i.e. the data is not sorted on the panel
>> identifier)?
>>
>> And is it a problem if my supposed panel id is a string variable?
>>
>> I found no relevant documentation on this.
>>
>> Thanks,
>>
>> Lasylo
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>
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