Description
Quantize location coordinates to a supplied angular grid.
Consent, privacy and retention records encode supplied purposes, audiences, withdrawal status and timing rules. Literal membership or a true local predicate can organize these assertions while valid informed consent, adequate de-identification and lawful processing require separate contextual assessment.
Quantize location coordinates to a supplied angular grid.
When to use this tool
Use Biomonitoring Record Location Precision Mask when checking the stated permission, withdrawal, retention or disclosure-record convention.
How to use the tool and how it works
- Enter latitude, longitude, quantumDegrees. Use the units and conventions below.
- Run the tool. Correct any format, range, or cross-field input error before interpreting the output.
- Read latitude, longitude, quantumDegrees. Use the output convention below.
Quantize location coordinates to a supplied angular grid. Require latitude [-90,90], longitude [-180,180], quantumDegrees in (0,180]; round each coordinate/grid step and clamp to its coordinate bounds.1
| Input field | Meaning and units | Accepted input |
|---|---|---|
| latitude | Latitude | Required. Finite number; minimum -90; maximum 90. |
| longitude | Longitude | Required. Finite number; minimum -180. |
| quantumDegrees | Positive angular grid spacing no greater than 180 degrees; not a geodesic privacy radius. | Required. Finite number; strictly above 0. |
| Output field | Interpretation | Returned shape |
|---|---|---|
| latitude | Latitude | Required. Finite number. |
| longitude | Longitude | Required. Finite number. |
| quantumDegrees | Positive angular grid spacing no greater than 180 degrees; not a geodesic privacy radius. | Required. Finite number. |
{
"input": {
"latitude": 51.24,
"longitude": 13.46,
"quantumDegrees": 0.5
},
"output": {
"latitude": 51,
"longitude": 13.5,
"quantumDegrees": 0.5
}
}Limitations and assumptions
- JavaScript half ties round toward positive infinity; this is precision reduction, not anonymization or geodesic-distance masking.
- 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 original permissions, participant choices and applicable organizational/legal requirements with the responsible professionals before actual use, disclosure or deletion.
References
Similar or alternative tools
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