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AW: st: AW: Problem with xi (Stata 11)
From
"Martin Weiss" <[email protected]>
To
<[email protected]>
Subject
AW: st: AW: Problem with xi (Stata 11)
Date
Wed, 2 Jun 2010 15:11:04 +0200
<>
Strangely, I get the correct result in Stata 11:
Country |
code | COUNTRY==56
3-digit | 0 1 | Total
-----------+----------------------+----------
40 | 4,927 0 | 4,927
56 | 0 8,857 | 8,857
203 | 5,932 0 | 5,932
208 | 4,532 0 | 4,532
233 | 4,865 0 | 4,865
246 | 4,714 0 | 4,714
250 | 4,716 0 | 4,716
276 | 4,891 0 | 4,891
300 | 4,873 0 | 4,873
348 | 4,490 0 | 4,490
372 | 4,585 0 | 4,585
380 | 21,773 0 | 21,773
-----------+----------------------+----------
Total | 70,298 8,857 | 79,155
What happens after a restart of Stata for you?
HTH
Martin
-----Ursprüngliche Nachricht-----
Von: [email protected]
[mailto:[email protected]] Im Auftrag von Walter
Garcia-Fontes
Gesendet: Mittwoch, 2. Juni 2010 15:07
An: [email protected]
Betreff: Re: st: AW: Problem with xi (Stata 11)
* Martin Weiss [02/06/10 15:00]:
> This code produces consistent results for me:
>
> *************
> webuse set http://puna.upf.edu
> webuse data/data.dta
> xi i.COUNTRY
> ta COUNTRY _ICOUNTRY_56, nol
> *************
This is what I get:
. ta COUNTRY _ICOUNTRY_56, nol
Country |
code | COUNTRY==56
3-digit | 0 1 | Total
-----------+----------------------+----------
40 | 4,927 0 | 4,927
56 | 265 8,592 | 8,857
203 | 5,932 0 | 5,932
208 | 4,532 0 | 4,532
233 | 4,865 0 | 4,865
246 | 4,714 0 | 4,714
250 | 4,716 0 | 4,716
276 | 4,891 0 | 4,891
300 | 4,873 0 | 4,873
348 | 4,490 0 | 4,490
372 | 4,444 141 | 4,585
380 | 21,773 0 | 21,773
-----------+----------------------+----------
Total | 70,422 8,733 | 79,155
See the 0's in 56 and the ones in 372 that shouldn't be there.
Now that you said I tried it from another machine with stata 10 and I
get the right results.
Is "xi" deprecated in Stata 11?
Walter
>
>
> HTH
> Martin
>
>
> -----Ursprüngliche Nachricht-----
> Von: [email protected]
> [mailto:[email protected]] Im Auftrag von Walter
> Garcia-Fontes
> Gesendet: Mittwoch, 2. Juni 2010 14:47
> An: Statalist
> Betreff: st: Problem with xi (Stata 11)
>
> I have a problem with the "xi" command in Stata 11 (completely updated
> as of today). I tried to create a dataset as simple as possible to
> reproduce the problem, which can be accessed from my server. In the
> dataset there is a single variable called COUNTRY with numeric codes
> for each country and labels identifying the country.
>
> There are 12 different values for COUNTRY (12 different countries) and
> 79155 observations with a variable number of observations for each
country.
> To reproduce:
>
> webuse set http://puna.upf.edu
> webuse data/data.dta
> xi i.COUNTRY
>
> Stata creates variables _ICOUNTRY_n as it should, where n are the
> different codes for the 12 countries, omitting the country with the
> smallest code.
>
> The problem is that some of the values of _ICOUNTRY are 0 when they
> shouldn't be, for instance I have cases where _ICOUNTRY_56 = 0 but
> COUNTRY = 56. This happens randomly for a few cases and I've looked at
> it from all angles but couldn't figure out what is going on.
>
> If I reduce the number of variables or the number of observations the
> problem disappears at some point, can't tell exactly when, so I'm
> providing the smallest example I could build.
>
> Walter
>
--
Walter Garcia-Fontes
mailto: [email protected] - http://puna.upf.edu
Departament d'Economia i Empresa - http://www.econ.upf.edu
Universitat Pompeu Fabra
Ramon Trias Fargas 25-27, 08005 Barcelona, Spain
Tel. +34 93 542 2722 - Fax. +34 93 542 1746
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