Center a Google Map on the Current WordPress Post

gistfile1.txt

add_filter('wpgmp_maps_options','wpgmp_maps_options',1,2);
function wpgmp_maps_options($default,$map_id) {
// Declare global $post to get current post data.
global $post;
// Get current post's latitude added by wp google map pro meta box. 
$default[center_lat]= get_post_meta($post->ID,'_wpgmp_metabox_latitude');
// Get current post's longitude added by wp google map pro meta box. 
$default[center_lng]=get_post_meta($post->ID,'_wpgmp_metabox_longitude');
//Return modified center location of the map.  
return $default;
}