Description
Expand eggs by totalVolume/countedVolume and divide by filteredWaterVolume.
A subsample fraction, histogram bin, or counted category describes a selected part of a larger fisheries record. Expansion and relative frequency have different denominators and require explicit sampling assumptions.
Expand eggs by totalVolume/countedVolume and divide by filteredWaterVolume.
When to use this tool
Use Fish Egg Density Subsample Factor when you need a bounded sample-count or expansion component.
How to use the tool and how it works
- Enter eggs, countedVolume, totalVolume, filteredWaterVolume. Use the units and conventions below.
- Run the tool. Correct any format, range, or cross-field input error before interpreting the output.
- Read expandedEggs, eggsPerWaterVolume. Use the output convention below.
Require nonnegative integer eggs, positive countedVolume and filteredWaterVolume, and totalVolume at least countedVolume. Expand eggs by totalVolume/countedVolume and divide by filteredWaterVolume.1
| Input field | Meaning and units | Accepted input |
|---|---|---|
| eggs | Eggs | Required. Safe integer; minimum 0. |
| countedVolume | Counted Volume | Required. Finite number; strictly above 0. |
| totalVolume | Total Volume | Required. Finite number. |
| filteredWaterVolume | Filtered Water Volume | Required. Finite number; strictly above 0. |
| Output field | Interpretation | Returned shape |
|---|---|---|
| expandedEggs | Expanded Eggs | Required. Finite number. |
| eggsPerWaterVolume | Eggs Per Water Volume | Required. Finite number. |
{
"input": {
"eggs": 50,
"countedVolume": 5,
"totalVolume": 100,
"filteredWaterVolume": 20
},
"output": {
"expandedEggs": 1000,
"eggsPerWaterVolume": 50
}
}Limitations and assumptions
- Counted and total sample volumes share units; output density uses the separate filtered-water volume unit and assumes a representative subsample without detection correction.
- 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
Use a documented sampling design and assess representativeness, detection, and uncertainty before making population estimates.
References
Similar or alternative tools
- Catch Sample Selection Factor
Return sample/catch, and catch/sample with defined true for a positive sample, otherwise expansionFactor zero with defined false.
- Amphibian Egg Clutch Subsample Count
Expand by total/subsample and report effective volume and eggs per nonempty subsample volume.