Geocoordinates distance
A formula to calculate the distance of geocoordinates.
<?php
$lat1 = 46.2341938036161;
$lon1 = -63.124778021257015;
$lat2 = 46.4141938036161;
$lon2 = -63.118571124705284;
$distance = (3958*3.1415926*sqrt(($lat2-$lat1)*($lat2-$lat1) + cos($lat2/57.29578)*cos($lat1/57.29578)*($lon2-$lon1)*($lon2-$lon1))/180);
print($distance);
?>see [1].
Here's some theory on that subject [2].
[1] http://agaricdesign.com/note/assigning-geographical-coordinates-drupal-c...
[2] http://www.codeguru.com/Cpp/Cpp/algorithms/article.php/c5115/
Post new comment