Lap analysis · Preview

Lap comparison

Compare SD logs or VPS CSV exports. Imported files stay in this browser. Starting a live watch sends only the selected reference route and sector boundaries to the VPS.

Import telemetry files

Use a saved VPS session

Or import SD / CSV files above

Load recorded data directly from your account. The saved circuit timing gate is selected automatically. No manual download or upload.

VehicleSession

1 · Timing gate

Same gate and direction for both laps

LatitudeLongitudeTravel bearing °Gate width (m)

Silverstone gate uses the existing VPS coordinates. Confirm the plotted gate crosses the start/finish straight.

Import telemetry.065–070 together, or a VPS CSV export, to begin.

Load data to inspect unique GPS fix rate and UTC increments.

2 · Choose laps

Reference lapComparison lap

Only complete laps passing the gap and GPS checks can be selected.

3 · Distance overlay

Smoothing

Scroll over a graph to zoom · drag to select a distance range · double-click to reset. Positive delta means the comparison lap is behind. Smoothing affects the displayed traces and cursor readings only; lap/sector times, live predictions and CSV exports use unsmoothed data. Discrete status channels are not smoothed.

Choose channels · up to four

Your speed traces and time delta will appear here.

Full sector comparison

Where the comparison lap gains or loses time

← Faster / gainedSlower / lost →Select a row to highlight the sector on the map and zoom the traces.

Compare laps to time fixed sector-gate crossings.

Theoretical best lap

Shows the raw sum of fastest sectors from compatible, eligible loaded laps. It is not a validated target lap: GPS timing errors and different sector entry/exit conditions can make it optimistic.

Compare laps, then calculate your dataset’s potential.

Edit sector boundaries

Internal boundaries as % of reference distance. Ten equal sectors are a starting point, not official timing sectors. The same boundary positions apply to live timing; live timing still uses the existing distance-projection method.

Differences are comparison minus reference. Timing is GPS-derived; tiny differences may be measurement noise. Sector times use unsmoothed data.

Live sector timing

REFERENCE-BASED ESTIMATE

Select and compare a clean reference lap above. Then choose a vehicle and start watching. The VPS processes every new stored sample; this panel refreshes about twice a second.

VehicleReference mode

Current sector—

Delta to reference—

Estimated lap—

Timing begins at the next forward gate crossing. The estimate assumes the remaining lap matches the reference. GPS loss, a reboot, a data gap or leaving the reference route invalidates the current lap. Keep this page open; watches expire after 15 minutes without polling and are lost when the HTTP service restarts.

Lap quality and excluded intervals

Timing is GPS-derived, not official timing. Reboots split runs; partial first/last laps are omitted. Gaps over 2 seconds, GPS jumps and stopped laps are excluded. A passing check does not identify every pit or safety-car lap—review the map and traces.