[osflash] distance between two points of lat/long

[Darren Cook]

> Getting some slightly 'off' results...anyone w/ a little geodata
> experience up for checking my math here? Really appreciate any
> suggestions for improving the code here too!

There was an article in a recent php Architect (Vol 5, Issue 10)
(http://www.phparch.com) where they gave this link:
http://en.wikipedia.org/wiki/Haversine_formula

FWIW, your code looks simpler than the php implementation in that
article, so you may be missing something.

Darren