eo_get_venue_lng( $venue_slug_or_id = '' )
Returns the longtitude co-ordinate of a venue.
If used with any arguments uses the venue of the current event.
Returns the longtitude of a venue specified by it's slug or ID. When used without an argument it uses the event specified in the
global $post (i.e. the current event in the Loop). If specifying the
specifying the venue by ID, the ID must be an integer.
$venue_slug_or_id = ''
The venue ID (as an integer) or slug (as a string). Uses venue of current event if empty.
The longtitude of the venue as a float. 0 If it doesn't exist.