GPS Tracking is available from application version 3.1.0 but MapIt Pro extension is required to use this feature. This tool is allowing creation of the line and polygon features using GPS tracking. It’s very useful tool if you need to gather the data quickly e.g. by driving around the site or recording track from point A to B.
To use this tool just start any line or polygon feature then the new ‘R’ button will show up on the screen. When you press the button a background service will start and new points will be automatically added to your feature as you move forward.
The track recording process is running in the background so you can do other things on your device and the points will be registered anyway even the app is not visible on the screen. To save battery you may switch the screen off as well. When the ‘Track recording’ process is active Android notification will be displayed showing the total length/perimeter of the active feature.
There are 3 methods of stopping a track recording process:
- by pressing stop button on the notification screen
- by pressing ‘R’ button on the map
- by pressing ‘END’ feature button on the map toolbar
Track recording button can be hidden if is not required in ‘Miscellaneous settings’ section. The tracking minimum distance between points or minimum time interval between points can be also changed there if required.
Please note that tracking is creating lots of point and therefore having multiple line or polygon features on the map created using that method may have impact on the performance of the app. It’s recommended to use this tool responsibly and export data to desktop on regular bases to free up resources on the device.
There are also some known issues connected to tracking and polygon features caused by current SDK limitations:
- When number of points in single polygon exceed 2000 the polygon fill will not be visible
- When polygon does contain self- intersections the polygon fill will not be visible as well.
If you need to gather point data using the tracking facility please refer to the steps in this article: http://mapit-gis.com/enable-tracking-for-point-layers .