Need help on locator scripts

AnjaliLi — Tue, 03 Apr 2012 02:36:48 GMT

I was modifying one example script from online ESRI's resource. Changed the projection information, basemap url, locator url. For some reason the "Locate" button always returns to a point, instead of an extent area. I am very new in js, please kindly help me.

the code is as following: *.html

<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01//EN" "http://www.w3.org/TR/html4/strict.dtd">
<html lang="en">
<head>
    <meta http-equiv="Content-Type" content="text/html; charset=utf-8">
    <meta http-equiv="X-UA-Compatible" content="IE=7,IE=9" />
    <meta name="viewport" content="initial-scale=1, maximum-scale=1,user-scalable=no"
    />
    <title>
      Geocode Details
    </title>
    <link rel="stylesheet" type="text/css" href="http://serverapi.arcgisonline.com/jsapi/arcgis/2.4/js/dojo/dijit/themes/claro/claro.css">
    <script type="text/javascript">djConfig = { parseOnLoad:true };</script>
    <script type="text/javascript" src="http://serverapi.arcgisonline.com/jsapi/arcgis/?v=2.4">
    </script>
    <style>
      html, body {
        height: 100%;
        width: 100%;
        color:#353129;
        overflow:hidden;
      }
      fieldset {
        border: 1px solid #353129;
        color:#353129;
      }
      #map{
        padding:0px;
        border:solid 2px #687D77;
        -moz-border-radius: 4px;
        border-radius: 4px;
      }
      #footerPane{
        border:none;
        overflow:auto;
        margin:5px 5px;
        height:200px;
      }

    </style>
    <script type="text/javascript" charset="utf-8">
      dojo.require("esri.map");
      dojo.require("dijit.layout.BorderContainer");
      dojo.require("dijit.layout.ContentPane");
      dojo.require("esri.tasks.locator");

      var locator, map;

      function init() {
        var initExtent = new esri.geometry.Extent({"xmin":-180,"ymin":-90,"xmax":180,"ymax":90,"spatialReference":{"wkid":4326}});
        map = new esri.Map("map",{
          wrapAround180:true,
          extent:initExtent
        });
        //resize map when browser size changes
        dojo.connect(map, 'onLoad', function(theMap) {
          var resizeTimer;
          dojo.connect(dijit.byId('map'), 'resize', function() { //resize the map if the div is resized
            clearTimeout(resizeTimer);
            console.log('resize');
            resizeTimer = setTimeout( function() {
              map.resize();
              map.reposition();
            }, 500);
          });
        });


        var basemap = new esri.layers.ArcGISTiledMapServiceLayer("http://data.nodc.noaa.gov/arcgis/rest/services/NODC-Ocean-Basemap-version-2012-01-24/MapServer");
        map.addLayer(basemap);

        //Create geocoder
        //locator = new esri.tasks.Locator("http://tasks.arcgis.com/ArcGIS/rest/services/WorldLocator/GeocodeServer");
    locator = new esri.tasks.Locator("http://data.nodc.noaa.gov/arcgis/rest/services/NODC-Ocean-Locator-version-2012-01-24/GeocodeServer");

        //Draw and zoom to the result when the geocoding is complete
        dojo.connect(locator, "onAddressToLocationsComplete", function(geocodeResults) {
          map.graphics.clear();
          dojo.forEach(geocodeResults, function(geocodeResult, index) {
            //create a random color for the text and marker symbol
            var r = Math.floor(Math.random() * 250);
            var g = Math.floor(Math.random() * 100);
            var b = Math.floor(Math.random() * 100);

            var symbol = new esri.symbol.SimpleMarkerSymbol(esri.symbol.SimpleMarkerSymbol.STYLE_CIRCLE, 20, new esri.symbol.SimpleLineSymbol(esri.symbol.SimpleLineSymbol.STYLE_SOLID, new dojo.Color([r, g, b, 0.5]), 10), new dojo.Color([r, g, b, 0.9]));
            var pointMeters = esri.geometry.Polygon(geocodeResult.location);
            var locationGraphic = new esri.Graphic(pointMeters, symbol);

            var font = new esri.symbol.Font().setSize("12pt").setWeight(esri.symbol.Font.WEIGHT_BOLD);
            var textSymbol = new esri.symbol.TextSymbol((index + 1) + ".) " + geocodeResult.address, font, new dojo.Color([r, g, b, 0.8])).setOffset(5, 15);
            //add the location graphic and text with the address to the map
            map.graphics.add(locationGraphic);
            map.graphics.add(new esri.Graphic(pointMeters, textSymbol));
          });
          var ptAttr = geocodeResults[0].attributes;

          var esriExtent = new esri.geometry.Extent(ptAttr.West_Lon, ptAttr.South_Lat, ptAttr.East_Lon, ptAttr.North_Lat, new esri.SpatialReference({wkid: 4326}));
          map.setExtent(esri.geometry.Polygon(esriExtent));

          showResults(geocodeResults);

        });

        dojo.connect(map, "onExtentChange", updateExtent);

      }

      function zoomTo(lat, lon) {
        var point = new esri.geometry.Point(lon, lat, {
          wkid: "4326"
        });

        var wmpoint = esri.geometry.Point(point);
        map.centerAt(wmpoint);
      }

      function updateExtent() {
        dojo.byId("currentextent").innerHTML = "<b>Current Extent JSON:</b> " + dojo.toJson(map.extent.toJson());
        dojo.byId("currentextent").innerHTML += "<br/><b>Current Zoom level:</b> " + map.getLevel();
      }

      function showResults(results) {
        var rdiv = dojo.byId("resultsdiv");
        rdiv.innerHTML = "<p><b>Results : " + results.length + "</b></p>";

        var content = [];
        dojo.forEach(results, function(result, index) {
          content.push("<fieldset>");
          content.push("<legend><b>" + (index + 1) + ". " + result.address + "</b></legend>");
          content.push("<i>Score:</i> " + result.score + " (<i>Method:</i> " + result.attributes.MatchLevel + ")");
          content.push("<br/>");
          content.push("<i>Address Found In</i> : " + result.address);
          content.push("<br/><br/>");
          content.push("Latitude (y): " + result.location.y);
          content.push("  ");
          content.push("Longitude (x): " + result.location.x);
          content.push("<br/><br/>");
          content.push("<b>GeoRSS-Simple</b><br/>");
          content.push("<georss:point>" + result.location.y + " " + result.location.x + "</georss:point>");
          content.push("<br/><br/>");
          content.push("<b>GeoRSS-GML</b><br/>");
          content.push("<georss:where><gml:Point><gml:pos>" + result.location.y + " " + result.location.x + "</gml:pos><gml:Point></georss:where>");
          content.push("<br/><br/>");
          content.push("<b>Esri JSON</b><br/>");
          content.push("<b>WGS:</b> " + dojo.toJson(result.location.toJson()));
          content.push("<br/>");

          var location_wm = esri.geometry.Polygon(result.location);

          content.push("<b>WM:</b> " + dojo.toJson(location_wm.toJson()));
          content.push("<br/><br/>");
          content.push("<b>Geo JSON</b><br/>");
          content.push('"geometry": {"type": "Point", "coordinates": [' + result.location.y + ',' + result.location.x + ']}');
          content.push("<br/><br/>");
          content.push("<input type='button' value='Center At Address' onclick='zoomTo(" + result.location.y + "," + result.location.x + ")'/>");
          content.push("</fieldset>");
        });
        rdiv.innerHTML += content.join("");

      }

      //Perform the geocode. This function runs when the "Locate" button is pushed.
      function locate() {
      var address = {
           'SingleLine': dojo.byId("address").value
        };
        //optionally return the out fields if you need to calculate the extent of the geocoded point
        locator.addressToLocations(address,["*"]);
      }

      dojo.addOnLoad(init);
    </script>
</head>

<body class="claro">
    <div dojotype="dijit.layout.BorderContainer" gutters="false" design="sidebar" style="width:100%;height:100%;">
      <div id="map" dojotype="dijit.layout.ContentPane" region="center"></div>
      <div id="footerPane" dojotype="dijit.layout.ContentPane" region="bottom">
        <div>Address :
          <input type="text" id="address" size="60" value="sea"/>
          <button onclick="locate();" dojoType="dijit.form.Button">Locate</button>
        </div>
        <div id="currentextent"></div>
        <div id="resultsdiv"></div>
      </div>
    </div>
</body>

</html>

topic Need help on locator scripts in ArcGIS JavaScript Maps SDK Questions

Need help on locator scripts