As usual, thanks to Nick for his help with this. I think I need a
"how to find what you want in those manuals" course.
The answer was on page 230 in [P]. I was looking in [U] 21.3.
Richard
--
Nick Cox wrote:
You can get evaluation on the fly with `=exp'
where "exp" is an expression to be evaluated.
That expression can itself include local macros.
So
forval i = 1(1)`=`t'+2' {
...
}
or
forval i = 1/`=`t'+2' {
...
}
Note that this is nothing to do with -forvalues-
as such. It is a general device for handling
macro evaluation, added in Stata 7 (but not documented)
and documented in Stata 8. For example, start at the
on-line help for -macro-.
There was also related discussion within SJ 3(2):185--202
(2003).
--
Richard Upward
School of Economics
University of Nottingham
University Park
Nottingham NG7 2RD
Tel: +44 (0) 115 95 14735
http://www.nottingham.ac.uk/economics/staff/details/richard_upward.html
*
* 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/
