Re: st: Modifying the content of a macro

[Thomas Speidel <thomas@tmbx.com>]

Thanks Nick and Jeph. That's exatly what I needed.

Quoting Jeph Herrin <stata@spandrel.net> Wed 28 Jul 13:26:41 2010:

> The -list- directive is not working because you substracting
> a string rather than a macro. You can either store "length" in
> a separate macro and then substract that in your statement #2, or
> instead try
>
>   local nolength = subinstr("`main'","length","",.)
>
> hth,
> Jeph
>
> On 7/28/2010 3:11 PM, Thomas Speidel wrote:
> > I am writing a loop to cycle through a number of models. For example,
> >
> > . sysuse auto
> > (1978 Automobile Data)
> >
> > . local main mpg price weight
> >
> > . local adjust length gear_ratio turn
> >
> > . foreach c of local main {
> > 2. local nolength: list adjust - "length"
> > 3. logistic foreign `c' `adjust' if "`c'" != "weight"
> > 4. logistic foreign `c' `nolength' if "`c'" == "weight"
> > 5. }
> >
> > Which fails on the second model. How do I modify `adjust' so that the
> > string "length" is removed from its content and applied to the second
> > set of models? In a less automated fashion, I want:
> >
> > . logistic foreign mpg length gear_ratio turn
> > . logistic foreign price length gear_ratio turn
> > . logistic foreign weight gear_ratio turn
> >
> > Preferrably, in this order. Creating another macro without "length" is
> > not ideal, because I am dealing with a much larger set of covariates.
> > Thanks.
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--
Thomas Speidel


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