[Plugin: MapPress Easy Google Maps] How to get geocoordinates out of Mappress Maps

I recently had an issue where I had to rework a page which already hat exisiting Mappress Maps.

What I needed there was the geocoordinates in order to calculate distances to other points

In case you need it here a the formulas for this

$maps  = Mappress_Map::get_post_map_list($post->ID);
		//Get first map
		   if (is_array($maps) && isset($maps[0]))

		   {
			$lat = $maps[0]->pois[0]->point['lat'];
			$lng = $maps[0]->pois[0]->point['lng'];
                   }

Calculating distance

function distance($lat1, $lng1, $lat2, $lng2, $miles = true)
{
$pi80 = M_PI / 180;
$lat1 *= $pi80;
$lng1 *= $pi80;
$lat2 *= $pi80;
$lng2 *= $pi80;
$r = 6372.797; // mean radius of Earth in km
$dlat = $lat2 - $lat1;
$dlng = $lng2 - $lng1;
$a = sin($dlat / 2) * sin($dlat / 2) + cos($lat1) * cos($lat2) * sin($dlng / 2) * sin($dlng / 2);
$c = 2 * atan2(sqrt($a), sqrt(1 - $a));
$km = $r * $c;
return ($miles ? ($km * 0.621371192) : $km);
}

calling function

echo round(distance($lat, $lng, 48.3534693, 11.7811621, false), 2).' Kilometers';

Hope this helps others!
(and also cudos to Chris Richardson who develops and maintains Mappress!)

http://wordpress.org/extend/plugins/mappress-google-maps-for-wordpress/