Description
Check a fish-length record against a supplied bin with optional upper inclusion.
Fish records distinguish morphometric length definitions, relative image scales, annulus labels, detection times and survey-effort geometry. A supplied conversion factor need not apply across species or sizes. Local labels, ratios and nominal swept areas organize observations without identifying a fish, determining age or estimating abundance.
Check a fish-length record against a supplied bin with optional upper inclusion.
When to use this tool
Use Fish Length Frequency Bin when you already have fishLength, lowerEdge, upperEdge, includeUpper and need to check a fish-length record against a supplied bin with optional upper inclusion.
How to use the tool and how it works
- Enter fishLength, lowerEdge, upperEdge, includeUpper. Use the units and conventions below.
- Run the tool. Correct any format, range, or cross-field input error before interpreting the output.
- Read inside. Inspect inside before interpreting the associated values.
Require fishLength/lowerEdge>=0 and upperEdge>lower; include the lower edge and include the upper only when includeUpper=true.1
| Input field | Meaning and units | Accepted input |
|---|---|---|
| fishLength | Fish Length | Required. Finite number; minimum 0. |
| lowerEdge | Lower Edge | Required. Finite number; minimum 0. |
| upperEdge | Upper Edge | Required. Finite number. |
| includeUpper | Controls the upper endpoint; lowerEdge is always included. | Required. Boolean. |
| Output field | Interpretation | Returned shape |
|---|---|---|
| inside | Inside | Required. Boolean. |
{
"input": {
"fishLength": 15,
"lowerEdge": 10,
"upperEdge": 20,
"includeUpper": false
},
"output": {
"inside": true
}
}Limitations and assumptions
- Bins are supplied; no length-frequency distribution, measurement validity or biological class is inferred.
- 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
Inspect original specimens, images, reference definitions and survey logs when verifying observations. Use a complete species-appropriate measurement or population method for age, abundance or condition questions; local scales and effort terms preserve only their stated basis.
References
Similar or alternative tools
- Fish Fork Total Length Source Factor
Estimate total length using a supplied total-per-fork linear factor.
- Fish Morphometric Reference Length Ratio
Express a supplied morphometric length relative to a positive reference length.