Description
Return directDistance=sum(segmentLengths), traversedDistance=sum(length*count)+detour, and detourFraction=detour/traversed.
Activity and assistive-task records distinguish planned, attempted, completed, assisted, observed, and optional components. Shares depend on the selected denominator and credit policy. A supplied code, geometry, or time-budget calculation is separate from evaluating an individual's function or safe access.
Return directDistance=sum(segmentLengths), traversedDistance=sum(length*count)+detour, and detourFraction=detour/traversed.
When to use this tool
Use Wheelchair Task Route Distance Factor when you need this specific task-count, assistance-code, timing, equipment-budget, or participation-record component.
How to use the tool and how it works
- Enter segmentLengths, traversalCounts, detourLength. Keep parallel arrays aligned. Use the units and conventions below.
- Run the tool. Correct any format, range, or cross-field input error before interpreting the output.
- Read directDistance, traversedDistance, detourFraction. Use the output convention below.
Require aligned nonnegative segmentLengths and nonnegative integer traversalCounts, nonnegative detourLength, and positive total traversed distance. Return directDistance=sum(segmentLengths), traversedDistance=sum(length*count)+detour, and detourFraction=detour/traversed.1
| Input field | Meaning and units | Accepted input |
|---|---|---|
| segmentLengths | Segment Lengths | Required. Array of finite number; maximum items 256. |
| traversalCounts | Traversal Counts | Required. Array of safe integer; maximum items 256. |
| detourLength | Detour Length | Required. Finite number; minimum 0. |
| Output field | Interpretation | Returned shape |
|---|---|---|
| directDistance | Sum of each listed segment once, without traversal weighting. | Required. Finite number. |
| traversedDistance | Traversed Distance | Required. Finite number. |
| detourFraction | Detour Fraction | Required. Finite number. |
{
"input": {
"segmentLengths": [
10,
20
],
"traversalCounts": [
2,
1
],
"detourLength": 5
},
"output": {
"directDistance": 30,
"traversedDistance": 45,
"detourFraction": 0.1111111111111111
}
}Limitations and assumptions
- Lengths need one unit. DirectDistance counts each supplied segment once regardless of traversals; gradients, surfaces, obstacles, maneuvering room, fatigue, and safe wheelchair access are not evaluated.
- 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
Use the intended assessment and a complete task or access model when a local check is insufficient. Verify task definitions, credit policies, measurement units, and the context of the underlying observations.
References
Similar or alternative tools
- Home Task Workspace Clearance Gap
For nonnegative openingWidth, objectWidth, handMargin, and alignmentUncertainty return nominalClearance=opening-object, usableClearance=nominal-2*handMargin-2*uncertainty, and fits when nominal>=2*(handMargin+uncertainty).
- Assistive Device Clearance Residual
Supplied nominal bench clearance only, without assistive-device fit or safety advice.