Description
Calculate a neighborhood population's share of its supplied regional population.
Geographic activity records depend on location precision, boundary vintage, observation time, population denominator and access-window conventions. A travel-time budget differs from actual accessibility, and rectangular cell area does not establish privacy. Local shares and labels need the original survey and spatial definitions.
Calculate a neighborhood population's share of its supplied regional population.
When to use this tool
Use Neighborhood Area Population Weight when you already have neighborhoodPopulation, regionPopulation and need to calculate a neighborhood population's share of its supplied regional population.
How to use the tool and how it works
- Enter neighborhoodPopulation, regionPopulation. Use the units and conventions below.
- Run the tool. Correct any format, range, or cross-field input error before interpreting the output.
- Read populationWeight. Use the output convention below.
Require safe whole regional count>=1 and neighborhood count within regional; return neighborhood/region.1
| Input field | Meaning and units | Accepted input |
|---|---|---|
| neighborhoodPopulation | Neighborhood Population | Required. Safe integer; minimum 0. |
| regionPopulation | Region Population | Required. Safe integer; minimum 1. |
| Output field | Interpretation | Returned shape |
|---|---|---|
| populationWeight | Population Weight | Required. Finite number. |
{
"input": {
"neighborhoodPopulation": 1200,
"regionPopulation": 10000
},
"output": {
"populationWeight": 0.12
}
}Limitations and assumptions
- Boundary vintage, count definitions and reference periods must match; no population data, representativeness or entitlement is established.
- 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 actual route, service schedule, survey frame and boundary source when assessing mobility or access. Review disclosure across the full spatial dataset and linked records; a location label or cell-size product is not a complete privacy method.
References
Similar or alternative tools
- Neighborhood Boundary Vintage Tag
Preserve explicit neighborhood boundary source and vintage metadata.
- Neighborhood Survey Disclosure Cell Size
Calculate the area of a supplied rectangular disclosure cell.