Description
Return preserved rim fraction.
Anthropological records depend on source-specific labels, observation periods, coding choices and participant context. A ratio, cyclic index or kinship-code offset describes supplied data rather than identifying a social relationship or cultural meaning. Replacing names with aliases does not establish anonymity.
Return preserved rim fraction.
When to use this tool
Use Material Culture Shard Rim Fraction when checking the stated observation, coding, chronology or record convention.
How to use the tool and how it works
- Enter preservedArc, reconstructedCircumference. Use the units and conventions below.
- Run the tool. Correct any format, range, or cross-field input error before interpreting the output.
- Read rimFraction. Use the output convention below.
Return preserved rim fraction. Require preservedArc >= 0 and reconstructedCircumference > 0 with arc <= circumference; rimFraction = arc/circumference.1
| Input field | Meaning and units | Accepted input |
|---|---|---|
| preservedArc | Preserved Arc | Required. Finite number; minimum 0. |
| reconstructedCircumference | Reconstructed Circumference | Required. Finite number; strictly above 0. |
| Output field | Interpretation | Returned shape |
|---|---|---|
| rimFraction | Rim Fraction | Required. Finite number. |
{
"input": {
"preservedArc": 12,
"reconstructedCircumference": 60
},
"output": {
"rimFraction": 0.2
}
}Limitations and assumptions
- The reconstructed circumference is supplied; vessel identity, refitting and complete archaeological reconstruction are not verified.
- 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 the original field records, community context and appropriate ethical/privacy practices for cultural interpretation or disclosure decisions.
References
Similar or alternative tools
- Artifact Refit Two Fragment Angle Gap
Return a refit angle-sum residual.
- Artifact Refit Orientation Sign
Return a supplied fragment-orientation sign product.