Interpreting track data in Lap Analysis

[BlackBMWs]

Hi All! First, I apologize in advance for this noobie question if this topic has been covered. In Lap Analysis, where the data shows the track in green and Yellow, how is that data intrepreted? It differs between runs and I am just trying to determine how I am doing on certain sections of the track.

Thank you! Rich

[Harry]

There is a title named "Lateral Acceleration" in the top left. This title changes depending on the map type displayed:

- Lateral Acceleration
- Longitudinal Acceleration
- Accuracy
- Reference

You can change the map type by selecting the tool in the top left (iOS) or top right (Android).

While lateral acceleration is selected, the lateral forces are displayed with a color signaling G forces. The default is to display lateral forces up to 1G in green, 1G to 1.25G in yellow and red above. You can adjust these values in LapTimer Expert Settings to match your vehicles characteristics. Ideally, you have the yellow to red level set to a force you do not want to go into and the green / yellow so you get a yellow in all corners. Red means too fast and green too slow.

- Harry

[Cloud9...68]

I wasn't aware of this feature (probably one of hundreds I'm not aware of!). When I select 'Reference', what is it telling me? I get a simple white outline of the track, with a red line (which I assume refers to the reference lap) overlaid either on top of, or near the white line. Sometimes the red line in inside the white line, and sometimes it is outside. But how do I interpret what these two lines are supposed to convey? Thanks.

[Harry]

Try the info button, it will bring up a legend for any chart. When selecting Reference, LapTimer displays the line driven for the lap analyzed (white/gray / black) to the line driven during the reference lap (red). This allows you to see differences in the way you went through a turn. Usually, this will be something you do after analyzing eg the Speed Chart. You see you have won time in a certain corner. Now, you switch to Map Reference to understand if the line driven has been different. NB: to compare lines driven, you need a high accuracy GPS.

Harry

[Cloud9...68]

Thanks; as is often the case, the answer is much simpler than I thought.