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Re: st: problems with levpet command
From
Nick Cox <[email protected]>
To
"[email protected]" <[email protected]>
Subject
Re: st: problems with levpet command
Date
Tue, 28 Jan 2014 10:21:26 +0000
You've not told us about -id- and -year-. -levpet- requires a numeric
panel identifier.
If -id- is string, then use -encode-.
(Removing zero values: why did you do that?)
Nick
[email protected]
On 28 January 2014 09:59, Skrinjaric Bruno <[email protected]> wrote:
> Thanks for quick reply. When I do -describe- this is what I get...
>
> . describe lnrva lnl lnrm lnrk
>
> variable storage display value
> name type format label variable label
> ------------------------------------------------------------------------
> --------
> lnrva float %9.0g Ln of
> Real VA, deflated by
>
> sectoral deflator
> lnl float %9.0g Ln of
> labour
> lnrm float %9.0g Ln of
> Real material costs,
>
> deflated by GDP deflator
> lnrk float %9.0g Ln of
> Real capital stock, deflated
> by GDP
> deflator
>
>
> Even if I try to destring it, it says they are already numeric...
>
> . destring lnrva lnl lnrm lnrk, replace force
> lnrva already numeric; no replace
> lnl already numeric; no replace
> lnrm already numeric; no replace
> lnrk already numeric; no replace
>
> I still do not know what to do.
>
>
> -----Original Message-----
> From: [email protected]
> [mailto:[email protected]] On Behalf Of Nick Cox
> Sent: Tuesday, January 28, 2014 10:38 AM
> To: [email protected]
> Subject: Re: st: problems with levpet command
>
> This often means that some variable that should be numeric is really
> string. Look carefully at the results of -describe- on the variables you
> are using and try using -destring-.
>
> Nick
> [email protected]
>
>
> On 28 January 2014 09:31, Skrinjaric Bruno <[email protected]> wrote:
>
>> I have only recently started using Stata and I came across a project
>> where I have to use levpet command. I have downloaded st060 (SJ-4-2)
>> and installed it.
>>
>> I want to use the following command:
>>
>> . levpet lnrva, free(lnl) proxy(lnrm) capital(lnrk) i(id) t(year)
>> valueadded
>>
>> However I always get to following error:
>>
>> no observations
>> r(2000);
>>
>> I am very sure I have all the observations for the variables I am
> using.
>> I am doing this for every sector according to NACE 1-digit
>> classification and the number of observations ranges from 25 - 1125
>> across different sectors.
>> But I removed all missing values, and also all zero values. All
>> variables are in float format.
>>
>> I have also read the help file, but I cannot find the solution to my
>> problem.
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