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ACROWRX - Formation Strip Chart ā
š¢ - INFO
This page describes the Strip Chart panel of the Formation page, including data channel selection, airplane line visibility, chart zoom, and indicator markers.
Strip Chart ā
The Strip Chart occupies the bottom-left area of the Formation page. It displays time-history data for all airplanes in the formation simultaneously, with each airplane represented by a different colored line. This makes it easy to compare flight parameters across the formation.
Chart Interaction ā
- Click on the chart to place an indicator marker at that time position. The marker shows the exact value for each visible airplane at that point.
- Click and drag to scrub through the data, updating the indicator in real time.
- The current playback position is marked with a red cross and a data label showing the current value for each visible airplane.
Chart Zoom Controls ā
Two buttons in the strip chart area control the time window width:
| Icon | Tooltip | Action |
|---|---|---|
 | "Zoom Out (Wider Window)" | Increases the time window, showing more of the flight |
 | "Zoom In (Narrower Window)" | Decreases the time window, showing more detail around the current position |
The time window is always centered on the current playback position.
Selecting Individual Airplanes ā
The 
Select Chart Lines button opens a popover that controls which airplanes are visible in the strip chart:
Quick Select Buttons ā
| Button | Action |
|---|---|
| All | Shows lines for all airplanes in the formation |
| None | Hides all airplane lines |
Per-Airplane Toggles ā
Below the quick select buttons, each airplane in the formation is listed with a color-coded dot and its name. Click an airplane to toggle its visibility:
- From "All" state: Clicking one airplane deselects only that airplane (all others remain visible).
- From "None" state: Clicking one airplane selects only that airplane (all others remain hidden).
- Otherwise: Each click toggles the individual airplane on or off.
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The airplane line visibility setting also controls the static trajectory display on the map. When you hide an airplane in the strip chart, its static trajectory on the map is also hidden. This is useful for isolating a specific airplane's path.
If an airplane has no name stored, it is displayed as "Airplane" followed by a short identifier.
Data Channel Selector ā
At the bottom of the strip chart, one or more Data Selector dropdowns allow you to choose which flight parameter is displayed. The number of selectors shown adjusts automatically based on the available screen width.
Each selector independently selects a data channel. Clicking a channel in the dropdown sets it as the active strip chart data.
Available Data Channels ā
The following data channels are available for display:
Flight Dynamics ā
| Channel | Description |
|---|---|
| G-load | Load factor (vertical acceleration in g units) |
| Roll-rate [deg/s] | Rate of roll rotation |
| Pitch Rate [deg/s] | Rate of pitch rotation |
| Yaw Rate [deg/s] | Rate of yaw rotation |
| Long. Accel [g] | Longitudinal acceleration |
| Lat. Accel [g] | Lateral acceleration |
Attitude ā
| Channel | Description |
|---|---|
| Yaw [deg] | Yaw (heading) angle |
| Pitch [deg] | Pitch angle |
| Roll [deg] | Roll (bank) angle |
Navigation ā
| Channel | Description |
|---|---|
| Speed | Ground speed (units depend on speed unit setting) |
| Altitude | Altitude above WGS84 ellipsoid (units depend on distance unit setting) |
| Height | Height above the judge's location (units depend on distance unit setting) |
| Box Hdg [deg] | Heading relative to the aerobatic box |
GNSS Quality ā
| Channel | Description |
|---|---|
| GNSS1 #Sat | Number of satellites tracked by GNSS receiver 1 |
| GNSS1 Fix | Fix quality indicator for GNSS receiver 1 |
| GNSS2 #Sat | Number of satellites tracked by GNSS receiver 2 |
| GNSS2 Fix | Fix quality indicator for GNSS receiver 2 |
Uncertainty Estimates ā
| Channel | Description |
|---|---|
| YAW Uncert | Yaw angle uncertainty |
| PITCH Uncert | Pitch angle uncertainty |
| ROLL Uncert | Roll angle uncertainty |
| VEL Uncert | Velocity uncertainty |
| POS Uncert | Position uncertainty |
Analog-to-Digital Channels ā
| Channel | Description |
|---|---|
| ADC0 through ADC7 | Eight analog-to-digital converter channels for external sensors (e.g., control position sensors) |
PPK (Post-Processed Kinematics) ā
| Channel | Description |
|---|---|
| ENU East [m] | PPK East coordinate in the local ENU frame |
| ENU North [m] | PPK North coordinate in the local ENU frame |
| ENU Up [m] | PPK Up coordinate in the local ENU frame |
| PPK Q | PPK quality indicator: 1 = fixed (best), 2 = float, 5 = single |
Computed ā
| Channel | Description |
|---|---|
| Loop Radius [m] | Instantaneous loop radius computed from velocity and centripetal acceleration (R = VĀ²/a) |
| GPS_MS | GPS time in milliseconds |
Indicator Markers ā
You can place up to 10 numbered indicator markers (0ā9) on the strip chart using the keyboard number keys. These markers appear as colored points on the chart and persist until cleared with the C key.
When a single leader airplane is selected, indicators are filtered to show only the active airplane's data. When set to "All", indicators for every airplane are displayed.
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Indicator markers are useful for comparing specific moments across different data channels. Place a marker at a point of interest, then switch data channels ā the marker stays at the same time position, allowing you to see the value of different parameters at that exact moment.