Geolocation Mapped Using Alternate Spatial Reference about cmv-app HOT 7 CLOSED

This is an excellent find and addition to the project. I would use the geometry service object rather than a straight ajax request. Also, simply use the maps spatial reference rather than setting it in the config.

The best way to contribute code is to use git/github. Clone the repo and submit pull requests. There are good tutorials on github about how to do this.

For now I can manually integrate this into the viewer.

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Have been trying all morning to change this to use a geometryservice with no luck. The call to the project method acts like it is not being recognized. Can't even get it to throw an error. Do you see anything obvious?

    locationSuccess: function(event) {

        this.graphics.clear();
        //Create point to be projected from geolocate operation
        var point = new esri.geometry.mapPoint(event.coords.longitude, event.coords.latitude, new SpatialReference({
            wkid: 4326
        }));

        //Variables necessary for reprojection
        gsvc = esri.tasks.GeometryService("http://gis/arcgis/rest/services/Utilities/Geometry/GeometryServer");
        var params = new esri.tasks.ProjectParameters();
        params.geometries = [point];
        params.outSR = this.map.spatialReference.wkid;
        alert(params.outSR);  

        gsvc.project(params, 
          function (projectedPoints) {
            //  get the projected point
            pt = projectedPoints[0];
            //  add it to the map
            this.addGraphic(pt);
            //  zoom the map to the added point
            this.map.centerAndZoom(pt, 4);
          },function(){alert("error");}
        );

}

from cmv-app.

In the code above, you need to use "new" when creating the geometry service object. Actually, this code is not need for two reasons:

1. As a general rule, you do not want to create a new geometry service object every time you get your position. Instead, create it once and use it many times (see below).
2. The app already has a geometry service object created. It's url is set in the config file and then gets created at: esri.config.defaults.geometryService (see the initConfig method in the controller.js file).

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So how is it referenced in the modules? Does it need to be added or is it just "available" as in being able to view it's URL like alert(GeometryService.url);. This learning curve is killing me :-(

from cmv-app.

Still trying to get this to work. Geometry service is returning properly projected point but can't get it to center and zoom.

    locationSuccess: function (event) {

        this.graphics.clear();
        var point = new esri.geometry.Point(event.coords.longitude, event.coords.latitude, new SpatialReference({ 
            wkid: 4326
        }));

        var outSR = new esri.SpatialReference({wkid: this.map.spatialReference.wkid});
        esri.config.defaults.geometryService.project([point], outSR, function (features){     
            pt = features[0];
            //console.log("gsvc returned: ", pt);
            this.map.centerAndZoom(pt, 3);
        });

......

from cmv-app.

@kgerhartz The issue above is that your project callback is not bound to the proper scope when it returns (no reference to the map object). To fix this you would use a lang.hitch(this, callback). Read here for more details: http://dojotoolkit.org/reference-guide/1.8/dojo/_base/lang.html#dojo-base-lang-hitch

I have committed code to handle the project (1339a47) have a look at the GeoLocation.js

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That helped a lot in terms of understanding more about OO aspect. Thanks for your patience.

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