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Select Polygons, Sum totals

Question asked by rachellinonis on Apr 25, 2012
Latest reply on Apr 26, 2012 by rachellinonis
Hello again!

I created a code from this example - to select a bunch of zip codes and then total up the population. I actually had this code working - doing exactly what I wanted to do - for almost a month. Then, I re-visited it, and for some reason it decided to stop working completely. The map doesn't show up anymore.

Any ideas as to what happened?

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN" "http://www.w3.org/TR/html4/strict.dtd"> <html>     <head>         <meta http-equiv="Content-Type" content="text/html; charset=utf-8"/>         <meta http-equiv="X-UA-Compatible" content="IE=7,IE=9" />         <!--The viewport meta tag is used to improve the presentation and behavior of the samples         on iOS devices-->         <meta name="viewport" content="initial-scale=1, maximum-scale=1,user-scalable=no"/>         <title>Selecting Zip Codes</title>         <link rel="stylesheet" type="text/css" href="http://serverapi.arcgisonline.com/jsapi/arcgis/2.8/js/dojo/dijit/themes/claro/claro.css">         <link rel="stylesheet" type="text/css" href="http://serverapi.arcgisonline.com/jsapi/arcgis/2.8/js/dojo/dijit/css/Popup.css">         <style>             html, body {                 margin: 10px;                 padding: 10px;                 font-family:"Verdana";                 font-size:small;             }             #map {                 border: solid #97DCF2 1px;                 width: 50%;                 height: 100%;             }             #header {                 border: solid #97DCF2 1px;                 width: 50%;                 height: 10%;             }             #footer {                 border: solid #97DCF2 1px;                 width: 50%;                 height: 10%;             }             #footer2 {                 border: solid #97DCF2 1px;                 width: 50%;                 height: 10%;             }             #footer3 {                                  width: 50%;                 height: 10%;                 padding: 10;             }             #footer4 {                 border: solid #97DCF2 1px;                 width: 50%;                 height: 10%;                 padding: 10;                 font-size: x-small;             }          </style>         <script type="text/javascript">             djConfig = {                 parseOnLoad : true             };          </script>         <script type="text/javascript" src="http://serverapi.arcgisonline.com/jsapi/arcgis/?v=2.8"></script>         <script type="text/javascript">             dojo.require("esri.map");             dojo.require("esri.layers.FeatureLayer");             dojo.require("dijit.layout.BorderContainer");             dojo.require("dijit.layout.ContentPane");             dojo.require("dijit.layout.AccordionContainer");             dojo.require("esri.dijit.Legend");             dojo.require("esri.toolbars.draw");             dojo.require("esri.tasks.query");             dojo.require("esri.dijit.Popup");             dojo.require("dojo.number");              var selectionToolbar, zipCodeLayer;             var legendLayers = [];              function init() {                  // Set the Initial Extent                 var initialExtent = new esri.geometry.Extent(-123.5328, 32.4344, -112.2582, 37.64041, new esri.SpatialReference({                     wkid : 4326                 }));                  // Set up the popup window                 var popup = new esri.dijit.Popup({                     fillSymbol : new esri.symbol.SimpleFillSymbol(esri.symbol.SimpleFillSymbol.STYLE_SOLID, new esri.symbol.SimpleLineSymbol(esri.symbol.SimpleLineSymbol.STYLE_SOLID, new dojo.Color([255, 0, 0]), 2), new dojo.Color([255, 255, 0, 0.25]))                 }, dojo.create("div"));                  var map = new esri.Map("map", {                     extent : esri.geometry.geographicToWebMercator(initialExtent),                     infoWindow : popup,                     slider : true,                     nav : true                 });                 dojo.connect(map, "onLoad", initSelectToolbar);                  // Set the basemap                 var baseMapLayer = new esri.layers.ArcGISTiledMapServiceLayer("http://server.arcgisonline.com/ArcGIS/rest/services/Canvas/World_Light_Gray_Base/MapServer");                 map.addLayer(baseMapLayer);                  // Set the selection symbols                 var fieldsSelectionSymbol = new esri.symbol.SimpleFillSymbol().setColor(new dojo.Color([255, 255, 0, 0.5]));                 fieldsSelectionSymbol.setOutline(new esri.symbol.SimpleLineSymbol("dashdot", new dojo.Color([255, 0, 0]), 2));                  // Establish the feature layer to be populated - the Zip Codes Layer                 zipCodeLayer = new esri.layers.FeatureLayer("http://arcgis.focusproject.org:8399/arcgis/rest/services/2012APR11_WhereAreTheVeterans_ZipCod/MapServer/0", {                     mode : esri.layers.FeatureLayer.MODE_ONDEMAND,                     opacity : .9,                     outFields : ["*"],                 });                 zipCodeLayer.setSelectionSymbol(fieldsSelectionSymbol);                 // Set the Feature Layer's symbol                  map.addLayers([zipCodeLayer]);                  dojo.connect(zipCodeLayer, "onSelectionComplete", sumVeterans);                 // When you're done selecting, perform the summation total of the veterans                 dojo.connect(zipCodeLayer, "onSelectionClear", function(features) {                     dojo.byId('messages').innerHTML = "<i>No Selected Fields</i>";                 });                  dojo.connect(map, 'onLoad', function(theMap) {                     //resize the map when the browser resizes                     dojo.connect(dijit.byId('map'), 'resize', map, map.resize);                 });             }              // ToolBar Function             function initSelectToolbar(map) {                 selectionToolbar = new esri.toolbars.Draw(map);                 var selectQuery = new esri.tasks.Query();                  dojo.connect(selectionToolbar, "onDrawEnd", function(geometry) {                     selectionToolbar.deactivate();                     selectQuery.geometry = geometry;                     zipCodeLayer.selectFeatures(selectQuery, esri.layers.FeatureLayer.SELECTION_NEW);                 });             }              // Sum Veterans Function             function sumVeterans(features) {                 var imputedSum = 0;                 //summarize the cummulative gas production to display                 dojo.forEach(features, function(feature) {                     imputedSum = imputedSum + feature.attributes.ImputedVeteran;                 });                 //dojo.byId('messages').innerHTML = "Total Veterans: " + imputedSum + "";                 var formattedImputedSum = dojo.number.format(imputedSum)                 dojo.byId('messages').innerHTML = "Total Veterans: " + formattedImputedSum + "";             }               dojo.addOnLoad(init);          </script>     </head>     <body class="claro">         <div id="header" dojotype="dijit.layout.ContentPane" region="top" style="overflow:hidden;">             <b>Veteran Population by Zip Codes in California</b><br>             Use the Selection Tool to calculate the total number of veterans within a certain area.         </div>         <div id="map" dojotype="dijit.layout.ContentPane" region="top" style="overflow:hidden;"></div>         <div id="footer" dojotype="dijit.layout.ContentPane" region="bottom" style="overflow:hidden;">             <button dojoType="dijit.form.Button" onClick="selectionToolbar.activate(esri.toolbars.Draw.EXTENT);">                 Select Zip Code Polygons             </button>             <button dojoType="dijit.form.Button" onClick="zipCodeLayer.clearSelection();">                 Clear Selection             </button>             <br>         </div>         <div id="legendDiv" dojotype="dijit.layout.ContentPane" region="bottom" style="overflow:hidden;"></div>         <div id="footer2" dojotype="dijit.layout.ContentPane" region="bottom" style="overflow:hidden;">             <span id="messages"></span>         </div>         <div id="footer3" dojotype="dijit.layout.ContentPane" region="bottom" style="overflow:hidden;">                      </div>         <div id="footer4" dojotype="dijit.layout.ContentPane" region="bottom" style="overflow:hidden;">             <img src="https://lh5.googleusercontent.com/-SmFdguzq84o/T5Fqf6acazI/AAAAAAAACnA/vYfGcbRbmCY/s49/blue-1.png" align="middle"> 0 - 896              <img src="https://lh4.googleusercontent.com/-Ns3epG-BoZM/T5Fqf2CruiI/AAAAAAAACm0/2NgNDuzoDT8/s49/blue-2.png" align="middle"> 897 - 2296              <img src="https://lh4.googleusercontent.com/-m8vMvN0uFtg/T5Fqf5_rjPI/AAAAAAAACmw/3r3DFtIz00U/s49/blue-3.png" align="middle"> 2297 - 3973              <img src="https://lh3.googleusercontent.com/-OhM1oitx1HQ/T5FqgQ6UBLI/AAAAAAAACnQ/D8Se4OenyUw/s49/blue-4.png" align="middle"> 3974 - 6574              <img src="https://lh4.googleusercontent.com/-RZ62_uGLCec/T5FqgYeFySI/AAAAAAAACnE/gf6Wr4HMu2Q/s49/blue-5.png" align="middle"> 6575 - 13,263      </body> </html>


Thanks everyone!

Rachel

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