Description
Include unknown in the mode denominator only when requested and always report unknownShare on the full total.
Population indicators depend on compatible boundaries, time periods, counted groups, and denominator choices. A share or density can change when exclusions or daytime populations change, even without arithmetic error.
Include unknown in the mode denominator only when requested and always report unknownShare on the full total.
When to use this tool
Use Workplace Catchment Mode Share Term when you need one transparent population-accounting component.
How to use the tool and how it works
- Enter modeWorkers, classifiedWorkers, unknownMode, includeUnknown. Use the units and conventions below.
- Run the tool. Correct any format, range, or cross-field input error before interpreting the output.
- Read denominator, share, unknownShare. Use the output convention below.
Require positive integer classifiedWorkers, modeWorkers within it, and nonnegative unknownMode. Include unknown in the mode denominator only when requested and always report unknownShare on the full total.1
| Input field | Meaning and units | Accepted input |
|---|---|---|
| modeWorkers | Mode Workers | Required. Safe integer; minimum 0. |
| classifiedWorkers | Classified Workers | Required. Safe integer; minimum 1. |
| unknownMode | Unknown Mode | Required. Safe integer; minimum 0. |
| includeUnknown | Include Unknown | Required. Boolean. |
| Output field | Interpretation | Returned shape |
|---|---|---|
| denominator | Selected population, count, or duration base; inspect its documented zero handling. | Required. Safe integer. |
| share | Dimensionless share under the stated denominator and exclusion convention. | Required. Finite number. |
| unknownShare | Unknown Share | Required. Finite number. |
{
"input": {
"modeWorkers": 40,
"classifiedWorkers": 100,
"unknownMode": 25,
"includeUnknown": true
},
"output": {
"denominator": 125,
"share": 0.32,
"unknownShare": 0.2
}
}Limitations and assumptions
- The two shares can have different denominators; workplace boundary, mode classification, survey weights, and population representativeness are supplied externally.
- 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
Review source definitions, geography, temporal alignment, and uncertainty before making a demographic or service-access conclusion.
References
Similar or alternative tools
- Service Area Population Base Token
Select daytimeCount or residentCount using useDaytime, then subtract nonnegative integer excluded within that selected count.
- Population Density Day Night Denominator
Divide nonnegative residentPopulation by positive landArea for nightDensity.