Clive
sorry, the result is not the same. In the Rich code the regress is,
for example, r73 against r72 and I'm doing r73 against r73 lagged.
Joao Lima
2008/12/9 Joao Ricardo F. Lima <[email protected]>:
> Dear Clive,
>
> I think that you can just do this:
>
> webuse nlswork
> reg ln_wage age race grade if year==68
> predict r1, r
> whitetst, fitted
> forval i=69(1)88 {
> reg ln_wage age race grade if year==`i'
> predict r`i', r
> reg r`i' L.r`i' /*change
> r`i_[n-1]' to L.r`i'*/
> whitetst, fitted
> }
>
> The result is the same of Rich Ochmann, but I'm not using a new local macro.
>
> HTH,
>
> Joao Lima
> 2008/12/9 Clive Nicholas <[email protected]>:
>> Stata 9.2, Windows XP
>>
>> I'm having trouble executing this -forval- code:
>>
>> webuse nlswork
>> reg ln_wage age race grade if year==68
>> predict r1, r
>> whitetst, fitted
>> forval i=69(1)88 {
>> reg ln_wage age race grade if year==`i'
>> predict r`i', r
>> reg r`i' r`i_[n-1]'
>> whitetst, fitted
>> }
>>
>> The problem, of course, is with -reg r`i' r`i_[n-1]'-, which chokes
>> with the error code:
>>
>> r ambiguous abbreviation
>> r(111);
>>
>> Even after checking -h forval-, I can't find a satisfactory way of
>> getting Stata to automate the second residual term, which should be
>> the one estimated for the year before the first one in each
>> -regress-ion.
>>
>> All solutions gratefully received.
>>
>> --
>> Clive Nicholas
>>
>> [Please DO NOT mail me personally here, but at
>> <[email protected]>. Please respond to contributions I make in
>> a list thread here. Thanks!]
>>
>> "My colleagues in the social sciences talk a great deal about
>> methodology. I prefer to call it style." -- Freeman J. Dyson.
>> *
>> * For searches and help try:
>> * http://www.stata.com/help.cgi?search
>> * http://www.stata.com/support/statalist/faq
>> * http://www.ats.ucla.edu/stat/stata/
>>
>
>
>
> --
> ----------------------------------------
> Joao Ricardo Lima, D.Sc.
> Professor
> UFPB-CCA-DCFS
> Fone: +553138923914
> Skype: joao_ricardo_lima
> ----------------------------------------
>
--
----------------------------------------
Joao Ricardo Lima, D.Sc.
Professor
UFPB-CCA-DCFS
Fone: +553138923914
Skype: joao_ricardo_lima
----------------------------------------
*
* For searches and help try:
* http://www.stata.com/help.cgi?search
* http://www.stata.com/support/statalist/faq
* http://www.ats.ucla.edu/stat/stata/
