Analyze simulation telemetry

Use Detailed Analysis to inspect laps, telemetry channels, cursor values, track position, and simulation comparisons.

Detailed Analysis helps race engineers inspect telemetry from completed simulations. Use it to compare laps, overlay simulations, read cursor values, and connect trace changes to setup or driving changes.

Before you start

Select the correct team.
Use a completed simulation with telemetry output.
Load or create an analysis layout.
Use comparison simulations that are relevant to the question you are answering. The comparison dialog can filter by circuit, vehicle, creator, date range, and tags.

Open Detailed Analysis from a simulation

Open Simulations.
Select a completed simulation.
Open the Analysis tab.
Load or create a layout.
Select a lap in the Simulations panel.
Turn channels on or off in the Channels panel.

The selected lap appears in the chart area. Cursor values appear in Cursor Data, and the circuit marker appears in Track Map when track data is available.

Open Analysis > Detailed Analysis.
Select Import Simulation.
Use filters when needed:
- Circuit.
- Vehicle.
- Created By.
- Date Range.
- Tags.
Select one or more simulations.
Select Compare.
Load or create a layout.
Select laps and channels.

When Detailed Analysis is opened from the sidebar, the first selected simulation becomes the primary simulation. Additional selected simulations become comparison simulations.

Compare simulations

In Detailed Analysis, select Add Simulation Comparison.
Review the prefilled filters. By default, 4ACE can prefill circuit and vehicle from the primary simulation.
Change filters when you need a wider or narrower comparison set.
Select simulations from the results list.
Select Compare.
Select laps for each loaded simulation.

The lap list groups laps by simulation. Comparison simulations show loading and retry states when their data is still being fetched.

Use the analysis workspace

Area	Use it for
Simulations	Expand simulations, select laps, change lap colors, retry failed lap loads, and set a reference lap.
Channels	Search, show, hide, reorder, group, split, rename, and style channels in the active panel.
Panels	Switch between saved panel views, add panels, rename panels, delete panels, and reorder tabs.
Chart area	Inspect selected lap traces, zoom the x-axis, switch between stacked and overlay layouts, and add channels from the context menu.
Overview	Adjust the visible x-axis range after data is loaded.
Cursor Data	Read values at cursor position for each visible channel and selected lap.
Track Map	See cursor position on the circuit map when slim track data is available.

Work with reference laps and delta

Use the flag button beside a selected lap to set a reference lap. When the Delta Time channel is visible and a reference lap is set, 4ACE computes a delta trace against that reference.

The delta unit follows the x-axis mode:

X-axis mode	Delta meaning
Distance	Delta time against the reference lap.
Time	Delta distance against the reference lap.

Keyboard shortcuts

Shortcut	Action
ArrowLeft / ArrowRight	Move cursor left or right by a small step.
Shift+ArrowLeft / Shift+ArrowRight	Move cursor left or right by a large step.
ArrowUp / ArrowDown	Zoom in or out by a small step.
Shift+ArrowUp / Shift+ArrowDown	Zoom in or out by a large step.
R	Reset cursors.
F	Toggle cursor mode between Follow and Locked.
Space	Set or clear the reference cursor.
L	Zoom to full lap.
A	Zoom to full extent.
T	Toggle Time or Distance x-axis.
Mod+K	Open the command palette.
Tab / Shift+Tab	Move to next or previous panel.
G	Toggle stacked or overlay chart mode.
Mod+Enter	Toggle fullscreen.
Mod+Shift+A	Add channels.

Mod means Command on macOS and Ctrl on Windows or Linux.

Troubleshooting

Problem	What to check
No Simulation Loaded appears	Select Import Simulation and choose at least one simulation.
No Layout Loaded appears	Select Load Layout or Create Layout.
No simulation data available appears	Confirm the simulation completed and has telemetry output.
Select a lap to view data appears	Select at least one lap in the Simulations panel.
Failed to load selected lap data appears	Select Retry for the failed lap.
Selected lap data unavailable appears	Confirm the selected lap has telemetry for the visible channels.
Track unavailable appears	The selected simulation does not have usable slim track data for the track map.
Comparison list has no results	Clear filters, widen the date range, or check vehicle, circuit, creator, and tag filters.
Layout cannot be loaded	Confirm the layout belongs to the active team and is not private to another user.