Building An Open Course Track Map Related:
An open course trackmap allows the user to overlay data much the same as a closed course trackmap.
With a closed course trackmap, all graphed lap data starts from a zero point. This zero point is based on
the start/finish as set in the trackmap.
With an open course trackmap, what we are trying to accomplish is allowing the user to overlay data
based on the same start point, which syncs all the data. The endpoint of the trackmap is not that
important, as we can only sync the data based on one point, which is start.
Building an open course trackmap uses the same commands as a closed course. Set 1, name the map.
Step 2, select the track type. Step 3, Set Lap Start and Set Lap End.
To set lap start, the user places the cursor in the desired location to start the map, and then selects the Set
Lap Start button. Then, move the cursor to the desired ending location and select the Set Lap End
button.
Finally select the Create GPS Trackmap as found in Step 4. Remember, there will not be lap data, as this
is not a closed course map.
Now, if you make additional open course runs, you will then be able to select the trackmap (upon
downloading) just the same as if you were making laps on a closed course.
When comparing data between open course outings, remember it is necessary to place the data in
Distance mode (View / DistanceX Mode). The reason for this is the fact that when you are looking at
open course data in time mode, the zero or starting point is based on when the G2X started logging. That
point occurs at different locations, as you might exceed 10 mph (if you have reset your G2X to start
logging at 10 mph for example) 20 feet from the starting line on one run and 30 feet the next run. Time
mode does not allow the user to overlay and compare data all based on the same starting point.
In the above example, you need to overlay data based on a set starting line point, not when the G2X
started logging. If you place the graph area into distance mode, then all data will start from the Set Lap
Start location assigned in Step 3.
For autocross, the G2X can be set to start logging with various channels. Some users have programmed
the G2X to start logging at .2 or .3 accel g data. This allows almost instant logging start, as soon as the
vehicle moves.
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