st: Re: flagging a specific pattern of values within observations

["Sergiy Radyakin" <Radyakin@aoek.uni-hannover.de>]

I don't know which language does your colleague use for this purpose, but
this can be done quite nicely in Pascal:

procedure TForm1.Button1Click(Sender: TObject);
type TAnswers=set of byte;
var  FullSet,v1,v2,v3:TAnswers;
begin
 FullSet:=[1,2,3]; v1:=[1]; v2:=[2]; v3:=[3];
 if (v1=FullSet-v2-v3) and (v2=FullSet-v1-v3) and (v3=FullSet-v1-v2) then 
ShowMessage('ok') else ShowMessage('not ok'); //OK
 FullSet:=[1,2,3]; v1:=[2]; v2:=[2]; v3:=[3];
 if (v1=FullSet-v2-v3) and (v2=FullSet-v1-v3) and (v3=FullSet-v1-v2) then 
ShowMessage('ok') else ShowMessage('not ok'); //Not OK
end;


In other words, each answer must be the full set of answers minus all the 
other answers. May be somebody can suggest how
this can be reformulated in terms of Stata's numlists.

Regards, Sergiy


----- Original Message ----- 
From: "Anirudh V. S. Ruhil" <ruhil@ohio.edu>
To: <statalist@hsphsun2.harvard.edu>
Sent: Tuesday, April 24, 2007 7:17 PM
Subject: st: flagging a specific pattern of values within observations



> A colleague is trying to accomplish something in a different stats package 
> and asked if STATA could effect the solution. "Of course", said I. Now I am 
> scratching my head for the code.  Individuals were asked to rank-order 3 
> choices. Person 55 did fine, but not Person 21. How can I generate a flag 
> for such respondent-errors?
>
> ----------------------------
> fid q11a q11b q11c
> 55 2 3 1
> 21 1 2 1
> ----------------------------
>
> thanks in advance
>
> Ani
>
> *
> *   For searches and help try:
> *   http://www.stata.com/support/faqs/res/findit.html
> *   http://www.stata.com/support/statalist/faq
> *   http://www.ats.ucla.edu/stat/stata/ 
*
*   For searches and help try:
*   http://www.stata.com/support/faqs/res/findit.html
*   http://www.stata.com/support/statalist/faq
*   http://www.ats.ucla.edu/stat/stata/