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Max Distance Limit in Google Maps

Thread began 2/26/2016 2:56 am by Suggs | Last modified 2/26/2016 10:29 am by Ray Borduin | 630 views | 1 replies |

Suggs

Max Distance Limit in Google Maps

Hi Folks,

I need to be able to cap the search distance from a zip code query to 20 miles and only return any relevant markers within that distance on the map.

Any help will be greatly appreciated

Thanks

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Ray BorduinWebAssist

You will want to store the latitude and longitude of the locations in your database. Then you can use a query to only return results in a certain radius based on the location like:

SELECT
`id`,
(
6373 *
acos(
cos( radians( :lat ) ) *
cos( radians( `lat` ) ) *
cos(
radians( `long` ) - radians( :long )
) +
sin(radians(:lat)) *
sin(radians(`lat`))
)
) `distance`
FROM
`location`
HAVING
`distance` < :distance
ORDER BY
`distance`
LIMIT
25



:lat and :long are the points the passed by the user where lat and long are the points stored in the database.

This is something I can help with in a premium support ticket.

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