Flake Scar Density Core Calculator
Pooled independently identified lithic scar count per actually examined core area, not retouch width/microblade index or stage classification. Caller independently establishes sample/context/calibration applicability; not definitive chronology, provenance, taxonomy, disease or human identity.
Description
Core scar density relates counts to matched exposed surface areas.
Core scar density relates counts to matched exposed surface areas.1
A pooled ratio differs from the unweighted mean of individual core densities. Use Flake Scar Density Core Calculator to evaluate the supplied inputs under the model explained below.
When to use Flake Scar Density Core Calculator
Use Flake Scar Density Core Calculator to evaluate the supplied inputs under the model explained below. Establish the units, measurement scope and model assumptions before entering values.
How to use Flake Scar Density Core Calculator and understand its results
- Establish the units, measurement scope and model assumptions before entering values.
- Enter Observed core scar counts, Observed same core exposed areas c m2 using the field table and validation rules below, then run the tool.
- Read Pooled observed scars per c m2; interpret the units, signs, ordering and unknown-value placeholders described below.
- Correct reported input errors and rerun. Apply successful results according to their specific meanings and check the assumptions before using them in a decision.
| Input field | Meaning | Value type | Requirement |
|---|---|---|---|
| observedCoreScarCounts | Observed core scar counts | array of number | Required; constraints below |
| observedSameCoreExposedAreasCM2 | Observed same core exposed areas c m2 | array of number | Required; constraints below |
Enter nonempty aligned nonnegative safe-integer core scar counts and positive matched exposed areas in cm². Divide total scars by total area for pooled scars/cm². No averaging of per-core ratios or technological classification occurs.
pooledScarsPerCM2=ΣscarCounts/ΣmatchedAreasCM2 Use the field order, units and branch conditions described above.
| Output field | Meaning | Value type |
|---|---|---|
| pooledObservedScarsPerCM2 | Pooled observed scars per c m2 | number |
{
"input": {
"observedCoreScarCounts": [
4,
6
],
"observedSameCoreExposedAreasCM2": [
2,
3
]
},
"output": {
"pooledObservedScarsPerCM2": 2
}
}Limitations and assumptions
A pooled ratio differs from the unweighted mean of individual core densities. Apply the exact scope and assumptions explained above.
All listed fields require explicit values. Unexpected fields, incorrect types, nonfinite numbers and sparse arrays fail validation. Domain-specific bounds, alignments and supported tokens are explained above; extremely large inputs or outputs can also be rejected. Input errors differ from successful false results, empty match lists and unknown-evidence placeholders.
Alternative or Complementary methods
Use Knapping Floor Refit Cluster Density Calculator for a related task: Refit-cluster density combines independently assigned clusters with a surveyed floor area.
Use Use-Wear Polish Classifier for a related task: Use-wear interpretation combines independently observed surface features with a reference model.
References
-
Flake Scar Density Core Calculator — tool.io
Similar or alternative tools
- Knapping Floor Refit Cluster Density Calculator
Refit-cluster density combines independently assigned clusters with a surveyed floor area.
- Use-Wear Polish Classifier
Use-wear interpretation combines independently observed surface features with a reference model.