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RE: st: RE: error with xtset
From
"Hoffman, George" <[email protected]>
To
"[email protected]" <[email protected]>
Subject
RE: st: RE: error with xtset
Date
Tue, 11 Jun 2013 11:10:36 +0000
What is your panel ID variable? Group and year do not identify each observation, as your tabulation shows. (262 observations fit group==1 and year==2004). This is what stata is complaining about.
-----Original Message-----
From: [email protected] [mailto:[email protected]] On Behalf Of Prakash Singh
Sent: Tuesday, June 11, 2013 5:46 AM
To: statalist
Subject: Re: st: RE: error with xtset
Dear George, I have checked that already there is missing data in group and year.
On Tue, Jun 11, 2013 at 4:09 PM, Hoffman, George <[email protected]> wrote:
> You probably have several rows of missing data in group and year.
> You could:
> tab group year, mis
> drop if group==.&year==.
>
> -----Original Message-----
> From: [email protected]
> [mailto:[email protected]] On Behalf Of Prakash
> Singh
> Sent: Tuesday, June 11, 2013 4:56 AM
> To: statalist
> Subject: st: error with xtset
>
> Dear all, I am working with unbalanced polled cross section data which having 4 district and 2 years information. when I am using xtset I am getting error which says repeated time values within panel.
>
> xtset group year
> repeated time values within panel
> r(451);
>
> the tabulation of entity and year is given below
>
> tab group year
>
> | Year
> group | 2004 2006 | Total
> -----------+----------------------+----------
> 1 | 262 342 | 604
> 2 | 188 247 | 435
> 3 | 103 130 | 233
> 4 | 70 95 | 165
> -----------+----------------------+----------
> Total | 623 814 | 1,437
>
> Could anyone suggest what is wrong with my command or data.
>
> Regards
> Prakash
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