Description
Return center-of-pressure coordinate gaps and Euclidean distance.
Motion records combine sampled coordinates, periodic angles, event timing and signed work or impulse conventions. Local numerical differences and panels can be computed independently while actual event detection, full trajectories and physiological significance require complete measurements and analysis.
Return center-of-pressure coordinate gaps and Euclidean distance.
When to use this tool
Use Force Platform Cop Reference Gap when checking the stated movement timing, angle, geometry, energy or panel convention.
How to use the tool and how it works
- Enter measuredX, measuredY, referenceX, referenceY. Use the units and conventions below.
- Run the tool. Correct any format, range, or cross-field input error before interpreting the output.
- Read dx, dy, distance. Use the output convention below.
Return center-of-pressure coordinate gaps and Euclidean distance. dx/dy subtract reference coordinates, distance = hypot(dx,dy).1
| Input field | Meaning and units | Accepted input |
|---|---|---|
| measuredX | Measured X | Required. Finite number. |
| measuredY | Measured Y | Required. Finite number. |
| referenceX | Reference X | Required. Finite number. |
| referenceY | Reference Y | Required. Finite number. |
| Output field | Interpretation | Returned shape |
|---|---|---|
| dx | Dx | Required. Finite number. |
| dy | Dy | Required. Finite number. |
| distance | Distance | Required. Finite number. |
{
"input": {
"measuredX": 4,
"measuredY": 6,
"referenceX": 1,
"referenceY": 2
},
"output": {
"dx": 3,
"dy": 4,
"distance": 5
}
}Limitations and assumptions
- Coordinates must share units, origin and frame; no force signal, center-of-pressure estimate or balance diagnosis is derived.
- Inputs must satisfy both the field types and the cross-field conditions above. Invalid input causes an error; a successful false flag or documented placeholder is a different result.
- Numeric calculations use binary floating point unless exact decimal-integer arithmetic is explicitly stated. No hidden measurement tolerance or decimal rounding is added; nonfinite or out-of-contract results are rejected. Numeric signed-zero results are exported as zero.
Alternative or Complementary methods
Inspect calibrated motion/force data and use an appropriate complete trajectory or dynamics analysis; interpret health and safe-loading implications with qualified professionals.
References
Similar or alternative tools
- Biomechanics: Force Plate Cop Coordinate
Return center-of-pressure coordinates from moments and normal force.
- Marker Frame Condition Ratio
Return a condition number from three supplied singular values.