Route in Google Maps using coordinates

Question

I have this code for creating routes using Google Maps

var map;
var directionsDisplay; // Instanciaremos ele mais tarde, que será o nosso     google.maps.DirectionsRenderer
var directionsService = new google.maps.DirectionsService();

function initialize() {
  directionsDisplay = new google.maps.DirectionsRenderer(); // Instanciando...
  var latlng = new google.maps.LatLng(-18.8800397, -47.05878999999999);

  var options = {
    zoom: 5,
    center: latlng,
    mapTypeId: google.maps.MapTypeId.ROADMAP
  };

  map = new google.maps.Map(document.getElementById("mapa"), options);
  directionsDisplay.setMap(map); // Relacionamos o directionsDisplay com o mapa desejado
}

initialize();

$("form").submit(function(event) {
  event.preventDefault();

  var enderecoPartida = $("#txtEnderecoPartida").val();
  var enderecoChegada = $("#txtEnderecoChegada").val();

  var request = { // Novo objeto google.maps.DirectionsRequest, contendo:
    origin: enderecoPartida, // origem
    destination: enderecoChegada, // destino
    travelMode: google.maps.TravelMode.DRIVING // meio de transporte, nesse caso, de carro
  };

  directionsService.route(request, function(result, status) {
    if (status == google.maps.DirectionsStatus.OK) { // Se deu tudo certo
      directionsDisplay.setDirections(result); // Renderizamos no mapa o resultado
    }
  });
});

I found this code on the link Blog Princiweb

I need to use the route using coordinates directly, without using Geoprocessing to convert the coordinates to address.

Answer 1

As I had commented, it is not necessary to move to the properties origin and destination an address (String), you can pass latitude and longitude.

For further clarification, please check the Google Maps API.