AnsweredAssumed Answered

No Coordinates

Question asked by afal711 on Jul 14, 2017
Latest reply on Jul 15, 2017 by rscheitlin

I learned that The spatial reference for a map is defined either by the extent passed to the map constructor or by the first layer added to the map.

coordinate system - Set custom spatial reference to base map in arcgis javascript api - Geographic Information Systems S… 

I am new to GIS. So this is my code:

   var govs= new TileLayer({
        url: "http://localhost:6080/arcgis/rest/services/services/MapServer",
        visible: false
    });
    var map = new Map({ });
 var view = new MapView({
        container: "viewDiv",  // Reference to the scene div created in step 5
        map: map,  // Reference to the map object created before the scene
        zoom: 1,  // Sets zoom level based on level of detail (LOD)
        center: [86999,99999]  // Sets center point of view using longitude,latitude
    });
    map.layers.add(govs);

 

I get a "Null" for both mapPoint.latitude and longitude when i print them in a popup using the code:

 

view.on("click", function (event) {
        event.stopPropagation(); // overwrite default click-for-popup behavior
        // Get the coordinates of the click on the view
        var lat = Math.round(event.mapPoint.latitude *1000 )/1000 ;
        var lon = Math.round(event.mapPoint.longitude * 1000) / 1000;
        view.popup.open({
            // Set the popup's title to the coordinates of the location
            title: "Reverse geocode: [" + lon + ", " + lat + "]",
            location: event.mapPoint // Set the location of the popup to the clicked location
        });
        view.popup.content =  "Hello,, ";
    });

 

Also, altering "center" in view constructor doesn't seem to affect the starting center point of the map. However, "zoom" works.

I also tried to define "spatial reference" within the view (but no use):

 var view = new MapView({
        container: "viewDiv",  // Reference to the scene div created in step 5
        map: map,  // Reference to the map object created before the scene
        zoom: 1,  // Sets zoom level based on level of detail (LOD)
        center: [86999,99999] , // Sets center point of view using longitude,latitude
extent: { // autocasts as new Extent()
            xmin: 75639.85130000021,
            ymin: 70262.05010000058,
            xmax: 108900.84379999992,
            ymax: 111618.54690000042,
            spatialReference: 28191
        } 

   });  

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