Description
Multiply nonnegative integer visitors by meanDwellHours within positive observationHours for personHours, then divide by observationHours and positive usableArea.
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.
Multiply nonnegative integer visitors by meanDwellHours within positive observationHours for personHours, then divide by observationHours and positive usableArea.
When to use this tool
Use Public Space Person Hour Density Term when you need one transparent population-accounting component.
How to use the tool and how it works
- Enter visitors, meanDwellHours, observationHours, usableArea. Use the units and conventions below.
- Run the tool. Correct any format, range, or cross-field input error before interpreting the output.
- Read personHours, meanOccupancy, meanDensity. Use the output convention below.
Multiply nonnegative integer visitors by meanDwellHours within positive observationHours for personHours, then divide by observationHours and positive usableArea.1
| Input field | Meaning and units | Accepted input |
|---|---|---|
| visitors | Visitors | Required. Safe integer; minimum 0. |
| meanDwellHours | Mean Dwell Hours | Required. Finite number; minimum 0. |
| observationHours | Observation Hours | Required. Finite number; strictly above 0. |
| usableArea | Usable Area | Required. Finite number; strictly above 0. |
| Output field | Interpretation | Returned shape |
|---|---|---|
| personHours | Person Hours | Required. Finite number. |
| meanOccupancy | Mean Occupancy | Required. Finite number. |
| meanDensity | Mean Density | Required. Finite number. |
{
"input": {
"visitors": 100,
"meanDwellHours": 0.5,
"observationHours": 5,
"usableArea": 200
},
"output": {
"personHours": 50,
"meanOccupancy": 10,
"meanDensity": 0.05
}
}Limitations and assumptions
- Area units define the density unit; this average assumes supplied counts and dwell times represent the interval and does not establish peak crowding or safe capacity.
- 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
- Population Cell Density Factor
Divide nonnegative integer population by positive cellArea for density.
- Activity Space Two Location Span
Compute Euclidean separation of the two planar coordinates.