Whoops! In my last posting I was focusing on the use of -vallist- to
provide the values of m, but I mistakenly perpetuated Daniel's error in my
code example. You can't generate y in a loop, because after the first time
around, it will fail. Nevertheless, -vallist- still could be useful.
Best,
Lee
> -----Original Message-----
> From: Daniel M�ller [SMTP:[email protected]]
> Sent: Thursday, January 09, 2003 1:20 PM
> To: [email protected]
> Subject: st: RE: referencing variables
>
> foreach m in 2 3 6 8 {
> gen y = x`m' + 1
> }
>
>
> Greetings,
> Daniel
>
> > -----Original Message-----
> > From: [email protected]
> > [mailto:[email protected]] On Behalf Of
> > [email protected]
> > Sent: Thursday, January 09, 2003 6:57 PM
> > To: [email protected]
> > Subject: st: referencing variables
> >
> >
> > Hello,
> >
> > I was wondering if anyone can help me on this programming
> > problem. I have an array of variables, let's say x1-x20, and
> > I wish to refer to one of them using values in another
> > variable (let's call it m), in an equation so that I can use
> > one equation that is different for each observation. In
> > other words, if my equation is y = x`m' + 1 and m = 2, then
> > the equation for that particular observation would be y = x2
> > + 1. Here is a partial list of what I'm talking about:
> >
> > obs m equation
> >
> > 1 2 y = x2 + 1
> > 2 3 y = x3 + 1
> > 3 6 y = x6 + 1
> > 4 8 y = x8 + 1
> >
> > I don't think using a global or macro variable works because
> > those only take on one value and because the equation is
> > essentially the model in a non-linear estimation, I don't
> > think I could use a loop. I was wondering if there are more
> > options out there. Thank you!
> >
> >
> >
> >
> > Jackie Yuen
> >
> >
> > *
> > * 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/
*
* 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/
