Re: newb - how do you count the # of markers in a diameter - and how to create a circle

Wasn't it kbperry who wrote:
>
>Thanks for the replies guys.
>
>I think that actually plotting the circle won't be that bad. It will
>just be hard to figure out what points lie within that circle. I guess
>either way its going to be another db call.
>
>I haven't searched on this yet, but is there a good distance formula?
>I know the basic math one, but how many miles in a degree?

It depends where you are. The lines of longitude get closer together as
you move North, and meet at the pole.

There are three different distance algorithms here:
http://www.econym.demon.co.uk/googlemaps/dist.htm

--
The Blackpool Community Church Javascript Team
http://www.econym.demon.co.uk/googlemaps/