When traveling, I typically set up a route with multiple waypoints. The expected behavior when following the route is that waypoints will clear as they are encountered, and the purple route segments will disappear off the screen once they are passed. While much of the time the routing display works as expected, I have seen a number of anomalous behaviors.
- Waypoint is not cleared when passed. See the Waypoint and route segment not clearing.mp4. Note that while the position icon is well past the waypoint flag, but the flag still shows in orange not gray. This I have seen only very occasionally.
- Route segment not cleared when passed. See the Waypoint and route segment not clearing.mp4. Note that while the route segment around the waypoint flag has been passed, that segment has not cleared. I have seen this on multiple occasions.
- Route segment clears ahead of passing it. See the Route segment clearing ahead of position icon.mp4. Note that the clearing starts off as expected, but then at about 20 seconds into the video the segments are cleared ahead of reaching them. This continues for a while. Then at about 1:30, it appears that the clearing will start to be correct, but then at 1:50 the clearing jumps to ahead of the position icon again. There is also an nmea file recorded at the same time.
- The next waypoint past the one reached is cleared instead of the one reached. See the Waypoint cleared ahead of reaching.mp4. Note that at the start of the video, the next waypoint is already in gray even though it has not been reached. Note that the Time to Waypoint at the bottom right of the screen is <1 min. At about 1:22 into the video, the distance to the next waypoint is shown as 115 feet. At that time, the next waypoint is cleared as can be seen at the left of the screen. At 1:28, the distance to the waypoint is shown as 10 feet, so that is clearly indicating the first gray waypoint, not the one that just cleared. Then at 1:29, the distance to the next waypoint jumps to 213 feet, indicating the distance to the waypoint that was incorrectly cleared. It appears that the software can get into a mode where instead of the waypoint that has been reached is cleared, the next one after that in the Route Info is cleared. Once that occurs, the next waypoint is cleared instead of the waypoint reached during the rest of the routing. I have seen this on multiple occasions.
- When a waypoint and the end of a route segment are coincident, or at least very close, there is an occasional odd behavior. The route segment will clear, the map display rotates 180 degrees, and the position icon shifts to the start of the route segment that was just cleared. The after a short while, the map rotates 180 degrees back to the normal orientation, the position icon goes to the correct location, and proper navigation continues. I have not been able to capture a video of this behavior. It may be a race condition in the software since if I backtrack and go through the same route, the odd behavior does not necessarily repeat.
The files are located here if it is easier to download the files for viewing.