Drive Carry/Roll Distance Split

Separate actual carry/total drive observations, retaining negative roll or mismatched observations instead of clipping; no ballistic carry inference or course advice.

Description

Observed total drive distance minus carry gives signed roll.

Observed total drive distance minus carry gives signed roll. Negative roll can expose mismatched evidence and is preserved.^[1]

The returned values include Signed observed roll distances meters, Observed carry shares of total. The How section below explains the calculation, input rules and interpretation.

When to use Drive Carry/Roll Distance Split

Use Drive Carry/Roll Distance Split when you need to evaluate the supplied records under the calculation and evidence rules below. No ballistic carry, terrain model or course recommendation is supplied.

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 Drive Carry/Roll Distance Split 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 observedCarryDistancesMeters, observedTotalDriveDistancesMeters using the field table and calculation rules, then run the tool.
Read signedObservedRollDistancesMeters, observedCarrySharesOfTotal. 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
observedCarryDistancesMeters	Observed carry distances meters	list of number	Required
observedTotalDriveDistancesMeters	Observed total drive distances meters	list of number	Required

Enter aligned nonempty positive totals/nonnegative carries in meters. Return signed roll and unclipped carry fractions.

roll=total−carry; carryShare=carry/total

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

Output field	Meaning	Value type
signedObservedRollDistancesMeters	Signed observed roll distances meters	list of number
observedCarrySharesOfTotal	Observed carry shares of total	list of number

json

{
  "input": {
    "observedCarryDistancesMeters": [
      200,
      220
    ],
    "observedTotalDriveDistancesMeters": [
      210,
      215
    ]
  },
  "output": {
    "signedObservedRollDistancesMeters": [
      10,
      -5
    ],
    "observedCarrySharesOfTotal": [
      0.9523809523809523,
      1.0232558139534884
    ]
  }
}

Limitations and assumptions

No ballistic carry, terrain model or course recommendation is supplied.

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 Strokes Gained Off-the-Tee Calculator: Tee-shot strokes gained compares benchmark expected strokes before and after actual shot/penalty costs. The benchmark is caller supplied. For a complementary task, use Long Jump Foul Board Margin cm: One-axis toe position relative to a foul line yields a signed geometric takeoff margin. Negative means beyond the line.

References

Drive Carry/Roll Distance Split — tool.io

Similar or alternative tools

Strokes Gained Off-the-Tee Calculator
Tee-shot strokes gained compares benchmark expected strokes before and after actual shot/penalty costs. The benchmark is caller supplied.
Long Jump Foul Board Margin cm
One-axis toe position relative to a foul line yields a signed geometric takeoff margin. Negative means beyond the line.