Another approach:
local myvars `r(varlist)'
also works. The left-single-quote, right-single-quote construct expands the
macro (to yield the list of variable names) and then copies those names to
myvars.
This may have advantages over Keith's solution, as evaluation and assignment (ie
using "=") will break down if the variable list, and hence the string length of
the list, gets beyond 244. This limitation does not apply to expansion and
copying.
Phil
Quoting "P. Wilner Jeanty" <[email protected]>:
> On Feb 2, 2008 12:57 AM, Keith Dear <[email protected]> wrote:
> > David,
> > Wilner is right, the varlist option does solve your problem. But the
> statement:
> > . local myvars r(varlist)
> > merely assigns the string "r(varlist)" to the macro, which therefore
> > contains only one word.
> > You can verify this with
> > . display "`myvars'"
> > r(varlist)
> >
> > You can get what you need like this:
> > . describe using my_file, varlist
> > . local myvars=r(varlist) // "=" inserted
> > . display "`myvars'"
> > x1 x2 x3 x4
> >
> > The "=" has the effect of *evaluating* r(varlist), and assigning the
> > result to myvars.
> > Keith
>
> David's problem is indeed solved. Not only can he put all the
> variables in a macro, he can also put them in separate macros. As
> Keith clarified, the "=" sign solved the problem of extended macro
> function manipulation.
> --
> P. Wilner Jeanty, Post-doctoral researcher
> Dept. of Agricultural, Environmental, and Development Economics
> The Ohio State University
> 2120 Fyffe Road
> Columbus, Ohio 43210
> (614) 292-6382 (Office)
> *
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>
--
Philip Ryan
Professor
Discipline of Public Health
Director, Data Management and Analysis Centre
Associate Dean (IT)
Faculty of Health Sciences
University of Adelaide
5005 South Australia
AUSTRALIA
CRICOS Provider Number 00123M
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