From: Bob Gustafson <bobgus@...>
Date: 2001-10-03T09:11:52+09:00
Subject: [ruby-talk:21964] Re: Great circle distance calculation?

>Is there a ruby module I can use to calculate the great circle distance
>between two points on the earth?
>
>For Perl there's the Math::Trig module that seems to do just what I want.
>
>/Daniel

If you have a Macintosh, you can use the Map control panel (has been there
since the middle 80's). Chicago to Kabul is 6920 miles..