ArcGIS Javascript Click Returning Invalid Coordinates

Question

I am using ArcGIS Javascript SDK 3.17 to display some points on a map, and when the user selects the point it takes them to Google Maps driving directions. The points are displaying in the correct location but when I click the graphic it sends some weird coordinates to Google Maps such as -8622416.7705,4523370.1646

Here is my code for the click event:

map.on("click", function (evt) {
 var lat = evt.mapPoint.x.toString();
 var lng = evt.mapPoint.y.toString();
 window.location = "comgooglemaps://?daddr=" + lat + "," + lng + "&directionsmode=driving";
});

Why is this not working?

• mkennedy: Because the map is in 3857, web Mercator. You'll need to convert them to lat lon.

Answer 1

Like @mkennedy said in her comment, you need to convert to a GCS, particularly WGS 1984 if you want lat/long. You can accomplish this using the webMercatorUtils:

// need to import 'esri/geometry/webMercatorUtils' and 'esri/SpatialRefeference'
var wgs84 = new SpatialReference({wkid: 4326});
// convert map coordinates to WGS 84
map.on("click", function (evt) {
 if (webMercatorUtils.canProject(evt.mapPoint, wgs84){
 var wgsPt = webMercatorUtils.project(evt.mapPoint, wgs84);
 window.location = "comgooglemaps://?daddr=" + wgsPt.y + "," + wgsPt.x + "&directionsmode=driving";
 }
});