Description
Compare supplied ordered birth years and birth-order indices.
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.
Compare supplied ordered birth years and birth-order indices.
When to use this tool
Use Pedigree Birth Order Interval Pair when you already have earlierBirthYear, laterBirthYear, earlierOrder, laterOrder and need to compare supplied ordered birth years and birth-order indices.
How to use the tool and how it works
- Enter earlierBirthYear, laterBirthYear, earlierOrder, laterOrder. Use the units and conventions below.
- Run the tool. Correct any format, range, or cross-field input error before interpreting the output.
- Read yearGap, orderGap. Use the output convention below.
Require signed safe whole years with later>=earlier and positive safe whole orders with later>=earlier. Subtract years exactly with BigInt and orders numerically, exporting safe gaps.1
| Input field | Meaning and units | Accepted input |
|---|---|---|
| earlierBirthYear | Earlier Birth Year | Required. Safe integer. |
| laterBirthYear | Later Birth Year | Required. Safe integer. |
| earlierOrder | Earlier Order | Required. Safe integer; minimum 1. |
| laterOrder | Later Order | Required. Safe integer. |
| Output field | Interpretation | Returned shape |
|---|---|---|
| yearGap | Exact laterBirthYear-earlierBirthYear, exported only when safe. | Required. Safe integer. |
| orderGap | Order Gap | Required. Safe integer. |
{
"input": {
"earlierBirthYear": 1990,
"laterBirthYear": 1994,
"earlierOrder": 1,
"laterOrder": 3
},
"output": {
"yearGap": 4,
"orderGap": 2
}
}Limitations and assumptions
- Equal years/orders are accepted. No pedigree, calendar convention, identity, relationship or actual birth order is verified; unsafe year gaps are rejected.
- 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
Similar or alternative tools
- Household Multi Residence Overlap Days
Count inclusive overlap days of two supplied residence periods.
- Ethnographic Elicitation Prompt Order Label
Label a supplied elicitation prompt's one-based position.