check distance between previous and current gps position

[vlowe]

Hi

 

i am looping through some history data i have collected via soap. i have the data in an array containing lat, lon and timestamp.

 

foreach($history['data'] as $record) {
echo 'add(jQuery(this), number += 1, "' . date("d-m-Y @ h:i:s",$record['timestamp']) . '", "map_post.php?n=' . $name . 'u=' . $history['user'] . '", "' . $history['user'] . '", "' . $record['latitude'] . '", "' . $record['longitude'] . '");';
}

 

i wondered it it would be possible to check if each position is within say 300 metres of the last position and if so dont display it?