GPS the open source way
The context menu contains a few other useful items. The POIs menu item allows you to add points of interest to the map. Adding a POI is easy: right-click on the map where you want to insert the POI, select the POIs | Add POI command, and provide the required information. Although tangoGPS doesn't support turn-by-turn navigation, you can use POIs to create routes. To do this, click on a POI and choose Go To. This puts a blue flag at the POI, and the map displays the current distance and bearing to the target (Figure 6). This also adds a brown pointer to the GPS marker that indicates the direction to the destination.
The Photos item in the context menu hides a nifty feature: the ability to geotag photos and place them on the map. Better yet, this feature is very straightforward to use. Right-click on the map and choose photos | geotag. This opens the Photo Correlate dialog box. To add a track (this can be a GPX file or a logfile from tangoGPS), select the directory containing the photos you want to tag. Then adjust the time, so the time stamps of the track file match the time stamps of the photos. Make sure that the add photos to the tangoGPS database checkbox is ticked before you press OK. Now you should see your photos on the map.
In the tangoGPS interface, the status bar under the map area provides real-time information, such as your current speed, heading, and altitude, as well as the distance covered and satellite info (number of satellites in view and satellites used by the GPS receiver). Finally, several tabs at the bottom of the tangoGPS main window give quick access to different sections. The Trip section provides detailed information about your current trip, with Stop and Reset buttons that stop recording and reset current values. In the Track section, you can enable the track-logging feature that creates logfiles. Similar to GpsDrive, tangoGPS supports the friends feature, and you can tweak its settings in the Friends section. As the name suggests, Config allows you to adjust the tangoGPS configuration.
Although neither GpsDrive nor tangoGPS can rival commercial GPS applications, you can still put them to some practical use. With either of these applications, you can view and use OpenStreetMap maps, save your trip data for use with other applications, store and manage POIs, and even geotag your photos and show them on the map.
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