Long Jump Foul Board Margin cm

Audit actual one-axis long-jump toe/foul-line geometry, positive margin behind line, retaining signed overstep; not official foul detection, measurement uncertainty or flight-distance forecast.

Description

One-axis toe position relative to a foul line yields a signed geometric takeoff margin.

One-axis toe position relative to a foul line yields a signed geometric takeoff margin. Negative means beyond the line.^[1]

The returned values include Signed legal takeoff margins cm, Observed geometric overstep flags. The How section below explains the calculation, input rules and interpretation.

When to use Long Jump Foul Board Margin cm

Use Long Jump Foul Board Margin cm when you need to evaluate the supplied records under the calculation and evidence rules below. No official foul detection, uncertainty analysis or flight-distance prediction is performed.

Prepare the observed race, match or training records and the stated units. Supply independently verified rule editions, calibration tables and targets where requested.

How to use Long Jump Foul Board Margin cm and understand its results

Prepare the observed race, match or training records and the stated units. Supply independently verified rule editions, calibration tables and targets where requested.
Enter observedBoardFoulLinePositionsCm, observedToePositionsAlongApproachCm using the field table and calculation rules, then run the tool.
Read signedLegalTakeoffMarginsCm, observedGeometricOverstepFlags. The explanation below defines the units, signs, ordering and any flags or placeholder values.
If the tool reports an input issue, correct the values and run it again. Apply the stated assumptions when interpreting a successfully returned result.

Input field	Meaning	Value type; see rules below	Requirement
observedBoardFoulLinePositionsCm	Observed board foul line positions cm	list of number	Required
observedToePositionsAlongApproachCm	Observed toe positions along approach cm	list of number	Required

Enter aligned nonempty finite centimeter coordinate lists in the same increasing approach direction. Return margins and strict-negative overstep flags.

margin=foulLinePosition−toePosition

Units, indexing, boundary conditions and exceptional cases are defined in the calculation rules above.

Output field	Meaning	Value type
signedLegalTakeoffMarginsCm	Signed legal takeoff margins cm	list of number
observedGeometricOverstepFlags	Observed geometric overstep flags	list of number

json

{
  "input": {
    "observedBoardFoulLinePositionsCm": [
      0,
      0
    ],
    "observedToePositionsAlongApproachCm": [
      -2,
      1
    ]
  },
  "output": {
    "signedLegalTakeoffMarginsCm": [
      2,
      -1
    ],
    "observedGeometricOverstepFlags": [
      0,
      1
    ]
  }
}

Limitations and assumptions

No official foul detection, uncertainty analysis or flight-distance prediction is performed.

Numeric inputs, where present, must be finite. Follow the calculation-specific rules for overflow, underflow and exceptional cases. Numeric lists are limited to 10,000 entries; string lists to 128 strings of at most 128 characters each. The rules above may impose smaller limits. Missing required fields, extra fields, wrong value types and violations of the calculation rules are input errors.

Alternative or Complementary methods

Use 400m Lane Stagger Distance: Ideal curved lane-centerline distance grows with radius and total curved arc. Official start positions can use additional measurement offsets. For a complementary task, use High Jump Clearance Height Check: Measured body/bar clearance and observed bar survival are separate evidence. Geometry alone cannot establish success.

References

Long Jump Foul Board Margin cm — tool.io

Similar or alternative tools

400m Lane Stagger Distance
Ideal curved lane-centerline distance grows with radius and total curved arc. Official start positions can use additional measurement offsets.
High Jump Clearance Height Check
Measured body/bar clearance and observed bar survival are separate evidence. Geometry alone cannot establish success.