[Az-Geocaching] Find the center

Brian Cluff listserv@azgeocaching.com
Sun, 25 Apr 2004 10:29:29 -0700


Robert & Linda Smith wrote:
> For instance: Point 1 is N34 36.346 W112 29.115,  Point 2 is N34
> 36.652 W112 27.942, Point 3 is N34 36.224 W112 28.532  I am looking
> for the coordinates at the dead center of these 3 points.

Hmmm, I guess the first thing you would want to do is decided "what is 
the center of a triangle... there is more than one way to calculate it, 
and it moved depending on how you do it.

http://jwilson.coe.uga.edu/EMT668/EMT668.Student.Folders/Meredith/Meredith/Assignment.4/Ctrs.Tri.html

Then after you have looked over that page, you will have to decide just 
how accurate you would like your center to be.
If you are talking about points that are many miles apart, you will have 
to take into account the curvature of the earth, and believe me... over 
just a few miles you can get a HUGE error if you don't take it into account.

All I can say is, good luck... the formula to do it right is going to 
probably fill the better part of a sheet of paper.  It would definitely 
make for a puzzle cache that almost nobody would find.
Brian Cluff
Team Snaptek