arcgis投影测试

<!DOCTYPE html>

<html>

<head>

    <meta charset="utf-8">

    <title>坐标转换测试</title>

    <link rel="stylesheet" href="http://js.arcgis.com/3.9/js/dojo/dijit/themes/soria/soria.css" />

    <link rel="stylesheet" href="http://js.arcgis.com/3.9/js/esri/css/esri.css" />

    <style>

        html, body, #main {

            padding: 0;

            margin: 0;

            width: 100%;

            height: 100%;

        }

    </style>

    <script src="http://js.arcgis.com/3.9/"></script>

    <script>

        var map, gsvc;

        require(["dojo/parser", "esri/geometry/Extent", "esri/map", "esri/layers/ArcGISTiledMapServiceLayer",

            "esri/SpatialReference", "esri/tasks/GeometryService", "esri/geometry/webMercatorUtils", "esri/geometry/Point",

            "dijit/layout/BorderContainer", "dijit/layout/ContentPane",

            "dojo/domReady!"],

            function (parser, Extent, Map, ArcGISTiledMapServiceLayer, SpatialReference, GeometryService, webMercatorUtils, Point) {

                parser.parse();

                map = new esri.Map("mapDiv");

                var layer = new ArcGISTiledMapServiceLayer("http://server.arcgisonline.com/ArcGIS/rest/services/ESRI_StreetMap_World_2D/MapServer");

                map.addLayer(layer);

                map.setExtent(new Extent(-144.13, 7.98, -52.76, 68.89, new SpatialReference({ wkid: 4326 })));

                gsvc = new GeometryService("http://sampleserver3.arcgisonline.com/ArcGIS/rest/services/Geometry/GeometryServer");

                map.on("click", projectToWebMercator);

                function projectToWebMercator(evt) {

                    map.graphics.clear();

                    var point = evt.mapPoint;

                    var outSR = new SpatialReference({ wkid: 102113 });

                    // 利用webMercatorUtils模块转换坐标

                    var wm = webMercatorUtils.geographicToWebMercator(point);

                    // 利用我们自己的计算方法转换坐标

                    var we = toWebMercator(point);

                    gsvc.project([point], outSR, function (projectedPoints) {

                        pt = projectedPoints[0];

                        var desc1 = "通过服务得到的坐标:<br/>" + pt.x.toFixed(3) + ";" + pt.y.toFixed(3);

                        var desc2 = "功能函数计算的坐标:<br/>" + wm.x.toFixed(3) + ";" + wm.y.toFixed(3);

                        var desc3 = "自己函数计算的坐标:<br/>" + we.x.toFixed(3) + ";" + we.y.toFixed(3);

                        document.getElementById("spatialReference").innerHTML = desc1 + "<br/>" + desc2 + "<br/>" + desc3;

                    });

                }

                function toWebMercator(pt) {

                    var num = pt.x * 0.017453292519943295;

                    var x = 6378137.0 * num;

                    var a = pt.y * 0.017453292519943295;

                    var y = 3189068.5 * Math.log((1.0 + Math.sin(a)) / (1.0 - Math.sin(a)));

                    return new Point({ "x": x, "y": y, "spatialReference": { "wkid": 102113 } });

                }

            });

    </script>

</head>

<body class="soria">

    <div data-dojo-type="dijit/layout/BorderContainer" data-dojo-props="design:'headline'"  id="main">

        <div data-dojo-type="dijit/layout/ContentPane" data-dojo-props="region:'top'"  style="height: 60px;">

            <h3>功能：投影测试</h3>

        </div>

        <div id="mapDiv" data-dojo-type="dijit/layout/ContentPane" data-dojo-props="region:'center'">

        </div>

        <div id="spatialReference" data-dojo-type="dijit/layout/ContentPane" data-dojo-props="region:'right', splitter:true" style="width:200px; border:1px solid #000;"></div>

    </div>

</body>

</html>
巴特西

arcgis投影测试

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