Tracking

Select Tracking from the menu to display your track log or the track log of another user who has chosen to share theirs with you.

If another user has shared their track log with you, a selection list titled Display shared user's tracks will be displayed. Select the user whose tracks you wish to see or set it to the blank option to see your own tracks.

You must specify a time and date range for the track points you wish to see. Avoid using a large date range when viewing the track points on the map, downloading the track points or using the copy-and-paste functions if it might result in a large number of track points being returned. This may put an undue load on the system. Listing tracks for large ranges only retrieves one page of tracks at a time, so will not put undue strain on the system.

You can also specify a maximum Horizontal Dilution of Precision (HDOP) value to exclude less accurate positions. Note: Entering a Max hdop value will also exclude all positions that have no HDOP value. Whether an HDOP value is available will depend on the features of the GPS logging application and hardware used.

You can further filter the results to show only those that include a note by selecting the Show notes only option.

List tracks

Click the List tracks button to see any new locations. The page is not automatically refreshed when a new location is received.

Restricted Sharing

When a user shares their tracks with you, they can restrict how far back you can view their track points. In that event, the date range shown at the top of the page may be reduced to show the actual time period being viewed.

The following data is shown for each location. The values are those sent from the device. The units for those values are assumed to be as follows:

  • Time—localized to the web browser’s time zone.
  • Latitude/Longitude—location using the WGS84 geodetic reference system.
  • HDOP—Horizontal Dilution of Precision—estimated horizontal accuracy in metres.
  • Altitude—metres.
  • Speed—metres-per-second.
  • Bearing— degrees.
  • Note—optional text entered by the user for the location.
  • Provider—optional data provider, e.g. GPS, Network.
  • Satellites—Optional value indicating how many satellites the fix was using.
  • Battery—most recently recorded battery percentage.

To convert the speed to kilometres-per-hour, multiply by 3.6. To convert the speed in metres-per-second to approximate miles-per-hour, multiply by 2.24. For an exact conversion to miles-per-hour, multiply by 3,600 then divide by 1,609.344.

Show map

Clicking the Show map button displays all the points matching the selection criteria on a map.

There should be small vertical borders on both sides of the map which can be used to scroll the whole page. Dragging within the map area moves the map.

The map can be zoomed in and out using the plus and minus icons at the top left-hand side of the map.

If the installation supports more than one map layer, there will also be a stacked layer icon beneath the zoom icons at the top left of the map.

When you are viewing the track points of another user on the map, if any new track points are recorded by that user, the map will be updated. If the Auto-centre on live update option is selected, the map is redrawn when a new track point is displayed.

Live Map Date Ranges

When new track points are recorded the map respects the date range and other criteria you have specified. If the time of the new track points is outside the date range or does not meet the other criteria, it will not be included on the map.

Download Tracks

Clicking the Download Tracks button initiates a browser file download of the track points meeting the specified date range and other selected criteria. The downloaded file is in the common GPX file format which can be imported into many Geographic information system (GIS) based applications.

Copy

The set of track points can be copied to an itinerary as a track log. Click the Copy button, then navigate to the intended destination itinerary. When the itinerary page is displayed, click the Paste button. After a delay, the track will have been copied to the itinerary as a new track log.

Copy and Paste

The copy and paste operations must be performed in the same browser window.

The copy operation does not copy the entire detail of the items being copied, instead just copying a reference to them together with any criteria used to select them. Should the results change in between the copy and paste operation, different values may be pasted from those displayed at the time the copy was initiated.

Tip

To download the track as a Keyhole Markup Language (KML) file, click the Copy button, then temporarily create a new itinerary. When the new itinerary page is displayed, click the Paste button. After a delay, the new track will have been copied to the itinerary. You can then select the track and click the KML download button to download it in the KML format.

Further Information