arcgis人口专题图 

<!DOCTYPE html>
<html>
<head>
    <meta charset="utf-8">
    <title>范围专题图</title>
    <link rel="stylesheet" href="http://js.arcgis.com/3.9/js/esri/css/esri.css">
    <style>
        html, body, #map {
            height: 100%;
            margin: 0;
        }
        #info {
            position: absolute;
            right: 0;
            top: 0;
            font: 14px sans-serif;
            background: #fff;
            width: 160px;
            text-align: center;
            border-radius: 0 0 0 10px;
        }
    </style>
    <script src="http://js.arcgis.com/3.9/"></script>
    <script>
        var map;
        require(["esri/map", "esri/layers/ArcGISTiledMapServiceLayer", "esri/layers/FeatureLayer",
          "esri/InfoTemplate", "esri/renderers/ClassBreaksRenderer", "esri/symbols/SimpleFillSymbol", "esri/dijit/Legend",
          "esri/Color", "dojo/domReady!"
        ], function (Map, ArcGISTiledMapServiceLayer, FeatureLayer,
          InfoTemplate, ClassBreaksRenderer, SimpleFillSymbol, Legend, Color
        ) {
            map = new Map("map");

            var baseMapUrl = "http://services.arcgisonline.com/ArcGIS/rest/services/World_Topo_Map/MapServer";
            var baseMap = new ArcGISTiledMapServiceLayer(baseMapUrl);
            map.addLayer(baseMap);

            var layerUrl = "http://services.arcgis.com/BG6nSlhZSAWtExvp/ArcGIS/rest/services/Demographics_World_Simp/FeatureServer/0";
            var layer = new FeatureLayer(layerUrl, {
                infoTemplate: new InfoTemplate("${CNTRY_NAME}", "${*}"),
                mode: FeatureLayer.MODE_ONDEMAND,
                outFields: ["*"]
            });

            var symbol = new SimpleFillSymbol();
            symbol.setColor(new Color([150, 150, 150, 0.5]));

            var renderer = new ClassBreaksRenderer(symbol, "POP2007");
            renderer.addBreak(0, 10000000, new SimpleFillSymbol().setColor(new Color([56, 168, 0, 0.5])));
            renderer.addBreak(10000000, 50000000, new SimpleFillSymbol().setColor(new Color([139, 209, 0, 0.5])));
            renderer.addBreak(50000000, 100000000, new SimpleFillSymbol().setColor(new Color([255, 255, 0, 0.5])));
            renderer.addBreak(100000000, 500000000, new SimpleFillSymbol().setColor(new Color([255, 128, 0, 0.5])));
            renderer.addBreak(500000000, Infinity, new SimpleFillSymbol().setColor(new Color([255, 0, 0, 0.5])));

            layer.setRenderer(renderer);
            map.addLayer(layer);

            layer.on("load", function () {
                
                var legend = new Legend({
                    map: map,
                    layerInfos: [{
                        layer: layer,
                        title: "各国人口"
                    }]
                }, "legend");
                legend.startup();
            });
        });
    </script>
</head>
<body>
    <div id="map"></div>
    <div id="info">
      <div id="legend"></div>
    </div>
</body>
</html>

 

posted @ 2019-07-12 11:37  DarJeely  阅读(866)  评论(0)  编辑  收藏  举报