get Coordinates in different Spatialreference

Question

Hi all,

I am using worldelevation3D service to display X-Y-Z coordinates, but X and Y i want to show in WKID: 32638,

SpatialReference for map i have isGCSWGS1984. To get coordinates i use this code still get different WKID coordinates:

let beforeLandslideUrl =
          "https://elevation3d.arcgis.com/arcgis/rest/services/WorldElevation3D/Terrain3D/ImageServer";

const sr1 = new SpatialReference({ wkid: 32638 });

let beforeLandslideLayer = new ElevationLayer({
            url: beforeLandslideUrl,
            spatialReference: sr1
          });

view.on("click", function(event) {
        var xyztext = document.getElementById("xyzcheckbox");
        if(xyztext.checked == true){
        // Query both elevation layers for the elevation at the clicked map position
        var position = event.mapPoint;
        var queryBeforeLandslide = beforeLandslideLayer.queryElevation(position);
        // When both query promises resolve execute the following code
        promiseUtils
          .eachAlways([queryBeforeLandslide])
          .then(function(results) {
            var posBeforeLandslide = results[0].value.geometry;

// Clear graphics from previous result (if applicable)
            //view.graphics.removeAll();
            //alert("ზღვის დონიდან: " + posBeforeLandslide.z +", " + "x: " + posBeforeLandslide.x + ", " + "y: " + posBeforeLandslide.y)
            // document.getElementById('xyzspan').innerHTML = "X: " + posBeforeLandslide.x.toFixed(2)+ "; " + "Y: " + posBeforeLandslide.y.toFixed(2)+ "; " + "Z: " + posBeforeLandslide.z.toFixed(2);
            document.getElementById('xspan').innerHTML = "X: " + posBeforeLandslide.x.toFixed(2);
            document.getElementById('yspan').innerHTML = "Y: " + posBeforeLandslide.y.toFixed(2);
            document.getElementById('zspan').innerHTML = "Z: " + posBeforeLandslide.z.toFixed(2);
          })
        }
        else
        {
            //view.graphics.removeAll();
        } 
      });

Jeff.Thompson@arlingtontx.gov_arlingtontx · Accepted Answer

https://developers.arcgis.com/javascript/latest/api-reference/esri-geometry-projection.html#project

You will need to call project somewhere in your code. It will be easier and probably perform better to re-project the mouse click, but if you want the map to actually display in WKID: 32638 you will need to do a forEach loop like the first example to re-project all of the graphics.