Adds a layer to a map and new features.

geoiq_layer.js

// Example of Adding a Structured layer to a map and then adding client side twitter messages
// This example includes categorical styling of sentiment. You can change the schema, the categories, etc.

var geoiq = new function() { 
  this.map = map;
  this.twitter_layer = null;

  this.createLayer = function () {
    var self = this
    var data = {};
    
    var dataset = {};
    dataset['title'] = "Twitter - Map "
    dataset['description'] = "Twitter Stream from ..."
    
    // Layer schema. Change to match your XML
    var attributes = [
      { 'name' : 'username', 'type' : 'string' },
      { 'name' : 'text', 'type' : 'string' },
      { 'name' : 'happiness', 'type' : 'string' },
      { 'name' : 'sentiment', 'type' : 'decimal' },
      { 'name' : 'latitude', 'type' : 'latitude' },
      { 'name' : 'longitude', 'type' : 'longitude' },
      { 'name' : 'created', 'type' : 'datetime' }
     ];
                                             
    dataset['attributes'] = attributes;      
    
    // This could also be left out to keep it private. But we're just creating an empty dataset
    data['permissions'] = [{
      "group_id" : "everyone",
      "permissions" : {
        "view" : 'false',
        "download" : 'false',
        "edit" : 'false'
      }
    }]
              
    data['dataset'] = dataset;
    
    var info_window_style = { 
      title         : "$[sentiment] - $[text]", 
      subtitle      : "$[username]", 
      tabs          : [
        {
          title : "Description", 
          type  : "text", 
          value : "$[text] \n\n $[username]"
        },
        {
          title : "Details", 
          type  : "text", 
          value : "Contributed: $[username]\nDate: $[created]\nLocation: $[longitude] x $[latitude]"
        }
      ]
    }

    // Find better icons
    var categorystyle = { 
        attribute:'happiness',
        categories:{
          "happy"           : "http://www.lasirenas.com/images/happy.gif",
          "neutral"         : "http://educate.intel.com/NR/rdonlyres/029D7205-DD5C-4113-8C8B-9B123BC0A9CE/5969/neutral_face.gif",
          "sad"             : "http://www.geniisoft.com/showcase.nsf/sadface.gif"
        }
      };
      
    // Creates a new empty layer on GeoIQ using the above schema
    jq.ajax({
      type: 'POST',
      url: '/overlays.json',
      dataType: 'json',
      contentType: 'application/json',
      data: JSON.stringify(data),
      processData : false,
      complete: function(xhr) {
        if (xhr.readyState == 4) {
          if (xhr.status == 201) {
            var response = JSON.parse(xhr.responseText)
            self.twitter_layer = self.map.addLayer({source: 'finder:'+response.id, title: dataset['title'], categoryFilter: categorystyle,
                                           infoWindowFilter: info_window_style, zoomToExtent: false, show_styles: false});
          }
        } else {
          console.log("Error creating layer")
        }
      }
    });
    
  }
};

// If your variable isn't called 'map'
//geoiq.map = map_2492;

// Create the blank 'bucket' dataset in GeoIQ and add Layer to map
geoiq.createLayer(F1.Maker.current_map)


// Put your XML parsing code here in a setTimeout loop
var features = [{
          username: "Bob",
          text: "First Twitter",
          sentiment: 0.8,
          happiness: "happy",
          created: '2011-01-01T12:40:00Z',
          latitude: 45, longitude: -100, // have to 
          geometry: {type: "Point", coordinates: [-100, 45]}
        }];

// Add these features within the browser to the map
geoiq.map.addFeatures(geoiq.twitter_layer, features, false);

// Get a list of twitter features that are on the map
console.log("Features", geoiq.map.getFeatures(geoiq.twitter_layer) )

geoiq.map.addFilter(geoiq.twitter_layer, {expression: "$[happiness] == 'happy'"})
geoiq.map.clearFilters(geoiq.twitter_layer)
geoiq.map.addFilter(geoiq.twitter_layer, {expression: "$[happiness] != 'happy'"})
geoiq.map.clearFilters(geoiq.twitter_layer)
geoiq.map.addFilter(geoiq.twitter_layer, {expression: "$[sentiment] > 0.5"})
geoiq.map.clearFilters(geoiq.twitter_layer)
geoiq.map.addFilter(geoiq.twitter_layer, {expression: "$[sentiment] < -0.5"})
geoiq.map.clearFilters(geoiq.twitter_layer)
geoiq.map.addHighlight(geoiq.twitter_layer, {expression: "$[sentiment] > -0.5"})
geoiq.map.clearHighlights(geoiq.twitter_layer)