Dear Andrew,
So only for polygon is better to use the mysql method is
it? Then for point is better to use this formula is it and much efficient
then the mysql method is it?
On Wed, Sep 8, 2010 at 2:56 AM, Andrew Leach <[email protected]>wrote:
> On 7 September 2010 19:46, ss <[email protected]> wrote:
> > Dear All,
> > I have a lat long point . So now I would like to run a
> > mysql query to find if I am within the radius of particular range or
> > not for each of circular geo fence? I have this website
> > http://howto-use-mysql-spatial-ext.blogspot.com/ but what is the
> > radius value in is it meters or something else? Thank you.
>
> A better way would be to calculate the distance of your test point
> from the centre point. If that distance is less than your radius, the
> test point is within the circle.
>
> http://www.movable-type.co.uk/scripts/latlong.html
>
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