Description
Return area-time share under active designation flags.
Conservation monitoring depends on survey effort, detection assumptions, area/time bases and explicit unknown-status policies. A local probability or coverage ratio describes supplied observations and models without establishing population abundance, ecological success or legal protection.
Return area-time share under active designation flags.
When to use this tool
Use Public Protected Area Time Share when checking a supplied conservation-monitoring, geometry or evidence-basis convention.
How to use the tool and how it works
- Enter areas, durations, activeDesignation. 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 areaTime, designatedAreaTime, share, defined. Inspect defined before interpreting the associated values.
Return area-time share under active designation flags. Require aligned nonnegative areas/durations and flags; sum area*duration for all and designated records, divide when total positive, otherwise zero with defined false.1
| Input field | Meaning and units | Accepted input |
|---|---|---|
| areas | Areas | Required. Array of finite number; maximum items 256. |
| durations | Durations | Required. Array of finite number; maximum items 256. |
| activeDesignation | Active Designation | Required. Array of boolean; maximum items 256. |
| Output field | Interpretation | Returned shape |
|---|---|---|
| areaTime | Area Time | Required. Finite number. |
| designatedAreaTime | Designated Area Time | Required. Finite number. |
| share | Dimensionless numerator/denominator ratio under the explicit basis above. | Required. Finite number. |
| defined | Whether the stated denominator or information basis permits interpretation of the associated value; inspect before using a placeholder. | Required. Boolean. |
{
"input": {
"areas": [
2,
3
],
"durations": [
5,
10
],
"activeDesignation": [
true,
false
]
},
"output": {
"areaTime": 40,
"designatedAreaTime": 10,
"share": 0.25,
"defined": true
}
}Limitations and assumptions
- Overlaps are not removed and designation flags are not legal verification of protection or conservation effectiveness.
- 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 an appropriate ecological sampling and detection model, verified field records and actual habitat geometry for substantive conservation inference.
References
Similar or alternative tools
- Restoration Plot Area Weight
Return plot area share and its count contribution.
- Restoration Survival Unknown Base Flag
Return restoration survival share under an unknown-status policy.