Description
Divide nonnegative preservedLength by positive originalRetention and preservedMass by positive massRetention.
Preservation can change specimen dimensions and mass. A retained/original factor describes a supplied correction assumption; applying it does not measure what happened to a particular specimen.
Divide nonnegative preservedLength by positive originalRetention and preservedMass by positive massRetention.
When to use this tool
Use Fish Sample Preservation Shrink Factor when you need to apply a documented preservation factor to an existing measurement.
How to use the tool and how it works
- Enter preservedLength, originalRetention, preservedMass, massRetention. Use the units and conventions below.
- Run the tool. Correct any format, range, or cross-field input error before interpreting the output.
- Read correctedLength, correctedMass. Use the output convention below.
Divide nonnegative preservedLength by positive originalRetention and preservedMass by positive massRetention.1
| Input field | Meaning and units | Accepted input |
|---|---|---|
| preservedLength | Preserved Length | Required. Finite number; minimum 0. |
| originalRetention | Original Retention | Required. Finite number; strictly above 0. |
| preservedMass | Preserved Mass | Required. Finite number; minimum 0. |
| massRetention | Mass Retention | Required. Finite number; strictly above 0. |
| Output field | Interpretation | Returned shape |
|---|---|---|
| correctedLength | Corrected Length | Required. Finite number. |
| correctedMass | Corrected Mass | Required. Finite number. |
{
"input": {
"preservedLength": 90,
"originalRetention": 0.9,
"preservedMass": 18,
"massRetention": 0.75
},
"output": {
"correctedLength": 100,
"correctedMass": 24
}
}Limitations and assumptions
- Retention values are multiplicative retained/original factors and are not capped at one; corrections rely on supplied preservation assumptions rather than specimen-specific measurements.
- 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
Retain the original observations and check specimen-specific preservation evidence and measurement uncertainty.
References
Similar or alternative tools
- Fish Mass Preservation Base Term
Divide nonnegative preservedMass by suppliedRetainedFraction in (0, 1] for conditionalFreshMass and subtract nonnegative freshReference for referenceGap.
- Histology Shrinkage Linear Area Factor
Square and cube retention for area and volume factors and divide the observations by those factors.