Description
Return observation duration after exclusions.
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 observation duration after exclusions.
When to use this tool
Use Fieldnote Observation Duration when checking the stated observation, coding, chronology or record convention.
How to use the tool and how it works
- Enter start, end, excluded. Use the units and conventions below.
- Run the tool. Correct any format, range, or cross-field input error before interpreting the output.
- Read duration. Use the output convention below.
Return observation duration after exclusions. Require end >= start and excluded within elapsed; duration = end-start-excluded.1
| Input field | Meaning and units | Accepted input |
|---|---|---|
| start | Start | Required. Finite number. |
| end | End | Required. Finite number. |
| excluded | Excluded | Required. Finite number; minimum 0. |
| Output field | Interpretation | Returned shape |
|---|---|---|
| duration | Elapsed duration in the common time unit specified above. | Required. Finite number. |
{
"input": {
"start": 10,
"end": 40,
"excluded": 5
},
"output": {
"duration": 25
}
}Limitations and assumptions
- Use compatible time units and nonoverlapping exclusion credit; no observation content, validity or ethnographic interpretation is assessed.
- 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
- Field Note Turn Overlap Classifier
Classify overlap of two supplied turn intervals.
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