Need quick support on google map live tracking

Hello,

For that you'll need the following:

1. A value stream that will keep the history of the movement, e.g. "VehicleLocationValueStream"
2. A thing template for your vehicle things, e.g. "VehicleThingTemplate". Depending on how you are receiving location data from your device, it will be either a GenericThing, or a RemoteThing (need more details).
   1. On that thing template you will need to define a property called "location" of type LOCATION. Make sure that this property is logged (there's a checkbox for it)
   2. You'll need to specify VehicleLocationValueStream as a value stream for this thing template
3. A thing corresponding to your vehicle, e.g. "Vehicle-0001", somehow receiving data from your device and saving it in "location" property.
   1. Wait for some time to receive some data and test it by executing service "QueryLocationPropertyHistory" on that thing. Use "location" as propertyName parameter and leave the rest by default. You should get a list of location readings. If you don't get any results, then troubleshoot your device connectivity before going to point (4).
4. A mashup to track vehicle location, e.g. "VehicleTrackingMashup". Depending on your UI requirements, you may want to add vehicle selection, etc. Here I'll describe only the most basic version for displaying position of a single Vehicle-0001:
   1. On this mashup you need to add a service "QueryLocationPropertyHistory" from thing "Vehicle-0001" to the DATA tab. Make sure that you select "Mashup Loaded?" checkbox when doing that.
   2. After you added it, when you select this service in the bottom-right corner you need to specify propertyName = "location", so that it queries your location (you've already tested it above, if not -- do it now)
   3. An Auto Refresh widget that you need to add to your mashup. Configure it to fire every 10 seconds (see RefreshInterval property), and bind it to that "QueryLocationPropertyHistory" service (drag-and-drop its Refresh event).
   4. A Google Maps widget
      1. Make sure that you installed the corresponding Extension from Marketplace
      2. Once you have it on your mashup, you need to bind "All Data" from "QueryLocationPropertyHistory" service to its "RouteData" property. Just drag "All Data" from the right part of the mashup builder and drop it on the Google Maps widget, then select RouteData as the target.
      3. While on the widget, you have to specify "RouteLocationField" by selecting "value" in the dropdown list.
      4. At this moment you should be able to save your mashup and view it. You should see the blue line connecting the locations that you've seen when you tested that QueryLocationPropertyHistory from Composer. This track will be refreshed every 10 seconds thanks to Auto Refresh widget that you configured earlier.

I hope I didn't forget anything, let me know whether it works or not.

Regards,
Constantine