Description
Round supplied public-location coordinates to a stated quantum.
Anthropological records preserve reported residence, exchange, use periods, prompt positions and source-qualified terms. Inclusive residence periods count a shared endpoint date, while display-coordinate rounding can still leave a location identifiable. Supplied labels require cultural, historical and consent context.
Round supplied public-location coordinates to a stated quantum.
When to use this tool
Use Ethnographic Location Public Precision Rounding when you already have latitudeDegrees, longitudeDegrees, suppliedQuantumDegrees and need to round supplied public-location coordinates to a stated quantum.
How to use the tool and how it works
- Enter latitudeDegrees, longitudeDegrees, suppliedQuantumDegrees. Use the units and conventions below.
- Run the tool. Correct any format, range, or cross-field input error before interpreting the output.
- Read roundedLatitudeDegrees, roundedLongitudeDegrees. Use the output convention below.
Require input latitude [-90,90], longitude [-180,180] and quantum>0; round each coordinate/quantum with Math.round and multiply back.1
| Input field | Meaning and units | Accepted input |
|---|---|---|
| latitudeDegrees | Latitude Degrees | Required. Finite number; minimum -90; maximum 90. |
| longitudeDegrees | Longitude Degrees | Required. Finite number; minimum -180; maximum 180. |
| suppliedQuantumDegrees | Positive rounding quantum; proposals outside output latitude/longitude bounds are rejected rather than clamped. | Required. Finite number; strictly above 0. |
| Output field | Interpretation | Returned shape |
|---|---|---|
| roundedLatitudeDegrees | Math.round(latitude/quantum)*quantum, required to remain in [-90,90] by the output contract. | Required. Finite number; minimum -90; maximum 90. |
| roundedLongitudeDegrees | Rounded Longitude Degrees | Required. Finite number; minimum -180; maximum 180. |
{
"input": {
"latitudeDegrees": 12.34,
"longitudeDegrees": 45.67,
"suppliedQuantumDegrees": 0.1
},
"output": {
"roundedLatitudeDegrees": 12.3,
"roundedLongitudeDegrees": 45.7
}
}Limitations and assumptions
- Negative halfway values round toward positive infinity. Coarse quanta can propose out-of-bounds coordinates; the output contract rejects them rather than clamping them. No underlying data removal or privacy guarantee is provided.
- 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
Consult original field records and community-provided meanings with the stated research method. Evaluate permissions and protection of underlying records; local balances, locators and masks do not establish cultural interpretation, authority or anonymity.
References
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