Quite so. There would be little point in -forval-
if it were not more efficient as -foreach-
is more general and could loop over anything -forval-
loops over.
The key difference is that -foreach- must store
what it loops over, which could be thousands of things,
while -forval- can calculate the loop index on the fly.
Nick
[email protected]
Scott Cunningham
> This appears to be working. I'm going to have to really dig into
> this to figure out why mine did not work, though. I admit, I don't
> understand when to use -forval- and -foreach-. They seem
> interchangeable, but you identified an efficiency gain for using -
> forval- here that I need to better understand. I can study the
> manuals, though.
*
* 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/
