ZoomIn to county

AkhilaM — Mon, 12 Oct 2020 20:17:10 GMT
I have a drop-down list of counties of each state. When I select a county it should zoom in to that county.
Please help me with this.
@rscheitlin #ArcGIS API for JavaScript
Re: ZoomIn to county

RobertScheitlin__GISP — Sat, 11 Dec 2021 23:48:37 GMT
Here is a sample for that:
<!DOCTYPE html>
<html>

<head>
  <meta http-equiv="Content-Type" content="text/html; charset=utf-8">
  <meta name="viewport" content="initial-scale=1, maximum-scale=1,user-scalable=no" />
  <title>Drop Down Test</title>
  <link rel="stylesheet" href="http://js.arcgis.com/4.17/dijit/themes/claro/claro.css">
  <link rel="stylesheet" href="http://js.arcgis.com/4.17/esri/css/main.css">
  <script src="http://js.arcgis.com/4.17/"></script>
  <style>
    html,
    body,
    #mainWindow {
      height: 100%;
      width: 100%;
      margin: 0;
      padding: 0;
    }
    body {
      background-color: #FFF;
      font-family: "Trebuchet MS";
    }
    #header {
      height: 32px;
      overflow:visible;
      border:none;border-bottom: 3px solid #CC9900;
      font-family: Windows;
      font-size:14pt;
      color: #FFFFFF;
      background: #000000;
      z-index: 99;
      line-height: 32px;
    }
    .searchDiv {
      float: right;
      z-index: 99;
    }
    #viewDiv {
      width: 100%;
      height: calc(100% - 32px);
      border: none;padding:0px;
      margin: 0px;
    }
  </style>

  <script>
    var map;
    require([
      "esri/Map",
      "esri/views/MapView",
      "dojo/on",
      "esri/tasks/support/Query",
      "esri/layers/FeatureLayer",
      "dojo/store/Memory",
      "dojo/_base/array",
      "dojo/_base/lang",
      "esri/request",
      "dojo/parser",
      "dijit/registry",
      "esri/widgets/Search",

      "dijit/layout/BorderContainer",
      "dijit/layout/ContentPane",
      "dijit/form/Button",
      "dijit/form/ComboBox",
      "dojo/domReady!"
    ], function(
      Map, MapView, on, Query, FeatureLayer, Memory, array, lang, esriRequest, parser, registry, Search
    ) {
      parser.parse();
      map = new Map({
        basemap: "topo"
      });

      var view = new MapView({
        container: "viewDiv",
        map: map,
        center: [-98.1883, 37.0868],
        zoom: 5
      });

      var searchWidget = new Search({
        view: view,
        container: "searchDiv"
      });

      esriRequest('http://sampleserver6.arcgisonline.com/arcgis/rest/services/Census/MapServer/3/query?where=1%3D1&outFields=STATE_NAME&returnGeometry=false&orderByFields=STATE_NAME&returnDistinctValues=true&f=json',
      //esriRequest('http://services9.arcgis.com/2882Ggz2LB0PQSyP/arcgis/rest/services/school/FeatureServer/0/query?where=1%3D1&outFields=NAME_OF_THE_SCHOOL%2CEMAIL_ADDRESS_OF_THE_SCHOOL&returnGeometry=false&f=json',
      {
        responseType:'json',
        timeout:15000
      }).then(lang.hitch(this,function(response){
        var store2 = new Memory({data:[]});
        registry.byId("stateSelect").set('store',store2);
        var data = array.map(response.data.features,lang.hitch(this,function(feat, index){
          var name = feat.attributes.STATE_NAME;
          var value = feat.attributes.STATE_NAME;
          // var diname = feat.attributes.NAME_OF_THE_SCHOOL;
          // var divalue = feat.attributes.EMAIL_ADDRESS_OF_THE_SCHOOL;
          var dataItem = {
            id:index,
            name,
            value:value
          };
          return dataItem;
        }));
        store2 = new Memory({data:data});
        registry.byId("stateSelect").set('store',store2);
      }));

      var States = new FeatureLayer({
        url: "http://sampleserver6.arcgisonline.com/arcgis/rest/services/Census/MapServer/3",
        outFields: ["*"]
      });

      var Counties = new FeatureLayer({
        url: "http://sampleserver6.arcgisonline.com/arcgis/rest/services/Census/MapServer/2",
        outFields: ["*"]
      });

      app = {
        zoomRow: function(id, which){
          var cb = registry.byId("stateSelect");
          console.info(cb.item.value);
          var sym = {
            type: "simple-fill",  // autocasts as new SimpleFillSymbol()
            color: [255, 0, 0, 0.5],
            outline: {  // autocasts as new SimpleLineSymbol()
              color: [128, 128, 128, 1],
              width: "0.5px"
            }
          }, gra;
          view.graphics.removeAll();
          var query = States.createQuery();
          var thePoly, theExtent;
          if(which == "State"){
            query.outFields=[];
            query.outSpatialReference = view.spatialReference;
            query.where = "STATE_NAME='" + (id).toString() + "'";
            console.info(query.where);
            query.returnGeometry = true;
            States.queryFeatures(query).then(function(response){
              gra = response.features[0];
              gra.symbol = sym;
              view.graphics.add(gra);
              thePoly = gra.geometry;
              theExtent = thePoly.extent.expand(2); //Zoom out slightly from the polygon's extent
              view.goTo(theExtent);
            });
            esriRequest("http://sampleserver6.arcgisonline.com/arcgis/rest/services/Census/MapServer/2/query?where=STATE_NAME='" + id.toString() + "'&outFields=NAME&returnGeometry=false&orderByFields=NAME&returnDistinctValues=true&f=json",
            {
              responseType: "json",
              timeout:15000
            }).then(lang.hitch(this,function(response){
              var store2 = new Memory({data:[]});
              registry.byId("countySelect").set('store',store2);
              var data = array.map(response.data.features,lang.hitch(this,function(feat, index){
                var name = feat.attributes.NAME;
                var dataItem = {
                  id:index,
                  name:name
                };
                return dataItem;
              }));
              store2 = new Memory({data:data});
              registry.byId("countySelect").set('store',store2);
              document.getElementById('countySelect').value = "Select County";
            }));
          }else if(which == "County"){
            query = Counties.createQuery();
            var county = (id).toString();
            county = county.replace(" County", "");
            query.where = "NAME='" + county + "'";
            query.returnGeometry = true;
            query.outFields=[];
            query.outSpatialReference = view.spatialReference;
            Counties.queryFeatures(query).then(function(response){
              gra = response.features[0];
              gra.symbol = sym;
              view.graphics.add(gra);
              thePoly = gra.geometry;
              theExtent = thePoly.extent.expand(2); //Zoom out slightly from the polygon's extent
              view.goTo(theExtent);
            });
          }
        }
      };

    });
  </script>
</head>

<body class="claro">
  <div id="mainWindow" data-dojo-type="dijit/layout/BorderContainer" data-dojo-props="design:'headline', gutters:false">
    <div id="header" data-dojo-type="dijit/layout/ContentPane" data-dojo-props="region:'top'"> Select a State/County and zoom to it on the map:
      <input id="stateSelect" data-dojo-type="dijit/form/ComboBox" value="Select State" onchange="app.zoomRow(document.getElementById('stateSelect').value, 'State');" data-dojo-props="maxHeight: 200" />
      <input id="countySelect" data-dojo-type="dijit/form/ComboBox" value="Select County" onchange="app.zoomRow(document.getElementById('countySelect').value, 'County');"  data-dojo-props="maxHeight: 200" />
      <input type="hidden" name="stateabbr" id="stateabbr" />
      <div id="searchDiv" class='searchDiv'></div>
    </div>
    <div id="viewDiv" data-dojo-type="dijit/layout/ContentPane" data-dojo-props="region:'left'"></div>
  </div>
</body>

</html>
‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍
Re: ZoomIn to county

AkhilaM — Tue, 13 Oct 2020 15:33:21 GMT
Thank you so much. It helped me a lot.
topic Re: ZoomIn to county in ArcGIS JavaScript Maps SDK Questions

ZoomIn to county

Re: ZoomIn to county

Re: ZoomIn to county
