<ng-map default-style="false" zoom="16" center="{{ '{{ getAddress() }}' }}" style="width: 100%; height: 430px;">
                <marker centered="true" position="{{ '{{ getMarkerPosition() }}' }}" draggable="true" on-dragend="onMarkerDragEnd($event)"></marker>
                <shape ng-if="showRegions" ng-repeat="shape in regions"
                        (...)
                </shape>
 </ng-map>

$scope.getMarkerPosition = function () {
            if (!$scope.address.mapPinLocationLatitude || !$scope.address.mapPinLocationLongitude) {
                return $scope.getObjectiveAddress();
            }

            return [$scope.address.mapPinLocationLatitude, $scope.address.mapPinLocationLongitude]
        };

$scope.getAddress = function () {
            var address = "..."; (here just concatenate the string with the address values(street, number, etc and it returned)

            return streetString + ', ' + address;
        };


     $scope.onMarkerDragEnd = function ($event) {
            $scope.address.mapPinLocationLatitude = $event.latLng.lat();
            $scope.address.mapPinLocationLongitude = $event.latLng.lng();
            $scope.updateRegions();
        };

<marker centered="true" position="{{ '{{ [address.mapPinLocationLatitude, address.mapPinLocationLongitude]}}' }}" draggable="true" on-dragend="onMarkerDragEnd($event)"></marker>