Description
Return uniform visual-item spacing under an endpoint convention.
Cognitive research records can encode stimuli, response timing, probability assumptions and observation support. Local differences and caller-defined tolerance labels do not establish perceptual validity, a cognitive mechanism, statistical equivalence or a clinical assessment.
Return uniform visual-item spacing under an endpoint convention.
When to use this tool
Use Visual Search Item Spacing when checking a supplied cognitive-task timing, stimulus, probability or evidence convention.
How to use the tool and how it works
- Enter span, itemCount, includeBothEndpoints. Use the units and conventions below.
- Run the tool. Correct any format, range, or cross-field input error before interpreting the output.
- Read spacing. Use the output convention below.
Return uniform visual-item spacing under an endpoint convention. Require span >= 0 and whole itemCount at least two when including both endpoints, otherwise at least one; spacing = span/(count-1) or span/count.1
| Input field | Meaning and units | Accepted input |
|---|---|---|
| span | Span | Required. Finite number; minimum 0. |
| itemCount | Item Count | Required. Safe integer. |
| includeBothEndpoints | Include Both Endpoints | Required. Boolean. |
| Output field | Interpretation | Returned shape |
|---|---|---|
| spacing | Spacing | Required. Finite number. |
{
"input": {
"span": 20,
"itemCount": 5,
"includeBothEndpoints": true
},
"output": {
"spacing": 5
}
}Limitations and assumptions
- The span's spatial/angular unit is preserved; item sizes, display calibration and perceptual crowding are not modeled.
- 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 a validated study design, calibrated measurements and appropriate statistical/professional interpretation for cognitive or health conclusions.
References
Similar or alternative tools
- Yee Grid Staggered Coordinate Offset
Return one staggered-grid coordinate.
- Finite Element Linear Shape One Node
Return one linear finite-element shape function and derivative.