completes geomarker rendering in senseanal

Author: mhausenblas

1.8/sensoranalytics/README.md

@@ -131,7 +131,9 @@ Now we're all set and can use the demo.
 
 The following sections describe how to use the demo after having installed it.
 
-TBD
+As a result, this is what you should see in the mapping agent Web interface:
+
+![OSM overlay with Markers](img/osm-overlay-marker.png)
 
 ## Development
 

1.8/sensoranalytics/img/osm-overlay-marker.png

@@ -21,17 +21,21 @@
     var vectorLayer = new OpenLayers.Layer.Vector("Overlay");
 
     $.getJSON(BASE_URL + '/data', function(d) {
-      console.log(d.label, d.lng, d.lat)
-      // Define markers as "features" of the vector layer:
-      var feature = new OpenLayers.Feature.Vector(
-              new OpenLayers.Geometry.Point(d.lng, d.lat).transform(epsg4326, projectTo),
-              {description:d.label} ,
-              {externalGraphic: 'marker.png', graphicHeight: 25, graphicWidth: 21, graphicXOffset:-12, graphicYOffset:-25  }
-          );
-      vectorLayer.addFeatures(feature);
-    });
+      for (var i = 0; i < d.length; i++) {
+        var gm = d[i]
+        console.log(gm.label, gm.lng, gm.lat)
+        if (gm.lng > 0 && gm.lat > 0) {
+          var feature = new OpenLayers.Feature.Vector(
+                  new OpenLayers.Geometry.Point(gm.lng, gm.lat).transform(epsg4326, projectTo),
+                  {description: 'At <b>' + gm.timestamp + '</b><br/>there were <b>' +  gm.numvehicles + '</b> vehicles<br/>in <b>' + gm.label + '</b>' } ,
+                  {externalGraphic: 'marker.png', graphicHeight: 25, graphicWidth: 21, graphicXOffset:-12, graphicYOffset:-25  }
+              );
+          vectorLayer.addFeatures(feature);
+        }
+      }
 
-    map.addLayer(vectorLayer);
+      map.addLayer(vectorLayer);
+    });
 
     //Add a selector control to the vectorLayer with popup functions
     var controls = {

1.8/sensoranalytics/mapping-agent/content/index.html

@@ -67,7 +67,9 @@ type MetaRecord struct {
 
 // GeoMarker carries the data for an OSM overlay marker
 type GeoMarker struct {
-	Lat   float64 `json:"lat"`
-	Lng   float64 `json:"lng"`
-	Label string  `json:"label"`
+	Lat          float64 `json:"lat"`
+	Lng          float64 `json:"lng"`
+	Label        string  `json:"label"`
+	TimeStamp    string  `json:"timestamp"`
+	VehicleCount int     `json:"numvehicles"`
 }

1.8/sensoranalytics/mapping-agent/data.go

@@ -62,8 +62,15 @@ func servecontent() {
 		w.Header().Set("Access-Control-Allow-Origin", "*")
 		w.Header().Set("Content-Type", "application/json")
 		// join with route and metrics data and create geomap overlay data
-		// TBD: create slice with all the data points
-		json.NewEncoder(w).Encode(lookup(t.Result.Records[0].ID))
+		gmlist := []GeoMarker{}
+		for _, record := range t.Result.Records {
+			gm := lookup(record.ID)
+			gm.TimeStamp = record.TimeStamp
+			gm.VehicleCount = record.VehicleCount
+			gmlist = append(gmlist, gm)
+			log.WithFields(log.Fields{"func": "servecontent"}).Info(fmt.Sprintf("%v", gm))
+		}
+		json.NewEncoder(w).Encode(gmlist)
 
 	})
 	log.WithFields(log.Fields{"func": "servecontent"}).Info("Starting app server")