Re: st: command option in ado programming

[Nick Winter <nw53@cornell.edu>]

Take a look at this FAQ:

http://www.stata.com/support/faqs/lang/syntax.html

"Option 3" can be implemented as:

        syntax  [, TRanslog1 TRanslog2(string)]

(assuming you want "TR" to be a valid abbreviation for translog.  Then, if 
the user specifies just

        mymodel y x1 x2, translog

then the local macro `translog1' will be non-blank.

If they use it as a string, then `translog2' will contain whatever they typed.

-Nick Winter

At 11:24 AM 11/17/2003 -0800, you wrote:

> Dear listers,
>
> I want to write an estimation command called "mymodel" for which I
> want all of the following syntax permissible:
>
>  (1) mymodel y x1 x2, translog
>  (2) mymodel y x1 x2, translog()
>  (3) mymodel y x1 x2, translog(homogeneous)
>
> where (1) and (2) estimate the same model, and (3) estimates a
> different model.
>
> I know how to make (2) and (3) work:
>
>    syntax varlist [if] [in], TRANSLOG(string)
>
> , but I don't know how to make (1) work side-by-side with (2) and
> (3). Any suggestion will be appreciated!
>
> Eddy
>
>
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