     var selectedLocation = ""
     var nodeLocations = [CLLocationCoordinate2D]()
     
+    //UI elements
     @IBOutlet var table: UITableView!
+    var activityIndicator = UIActivityIndicatorView()
+
+    
     
     override func viewDidLoad() {
         super.viewDidLoad()

                    self.nodeLocations.append(CLLocationCoordinate2D(latitude: CLLocationDegrees(Float(splitStringCoordinatesPairs[0])!), longitude: CLLocationDegrees(Float(splitStringCoordinatesPairs[1])!)))
                }
                print(self.nodeLocations)
                self.table.reloadData()
            }
            else{

    }

    func scanData(){
        //setup a activity indicator and keep animating till the data is fetched
        activityIndicator.center = self.view.center
        activityIndicator.hidesWhenStopped = true
        activityIndicator.activityIndicatorViewStyle = UIActivityIndicatorViewStyle.gray
        view.addSubview(activityIndicator)
        
        activityIndicator.startAnimating()
        let dynamoDBObjectMapper = AWSDynamoDBObjectMapper.default()
        
        let scanExpression = AWSDynamoDBScanExpression()
