Description
Estimate pollen amount from a supplied marker-grain ratio while preserving an undefined zero-marker result.
Entomological counts can refer to individuals, hosts, marker grains or a known cohort. Ratios are meaningful only when numerator and denominator describe compatible observations; an absent denominator differs from an observed zero proportion.
Estimate pollen amount from a supplied marker-grain ratio while preserving an undefined zero-marker result.
When to use this tool
Use Pollen Counter Marker Grain Zero Budget when checking a supplied count ratio or cohort balance.
How to use the tool and how it works
- Enter pollenCount, markerCount, suppliedMarkerAmount. Use the units and conventions below.
- Run the tool. Correct any format, range, or cross-field input error before interpreting the output.
- Read defined, estimatedAmount. Inspect defined before interpreting the associated values.
Require nonnegative whole pollenCount and markerCount and nonnegative suppliedMarkerAmount. When markerCount > 0, estimatedAmount = pollenCount*suppliedMarkerAmount/markerCount and defined = true; otherwise return zero and defined = false.1
| Input field | Meaning and units | Accepted input |
|---|---|---|
| pollenCount | Pollen Count | Required. Safe integer; minimum 0. |
| markerCount | Marker Count | Required. Safe integer; minimum 0. |
| suppliedMarkerAmount | Supplied Marker Amount | Required. Finite number; minimum 0. |
| Output field | Interpretation | Returned shape |
|---|---|---|
| defined | Whether the stated denominator has positive support; read this before interpreting a zero placeholder. | Required. Boolean. |
| estimatedAmount | Estimated Amount | Required. Finite number. |
{
"input": {
"pollenCount": 20,
"markerCount": 0,
"suppliedMarkerAmount": 100
},
"output": {
"defined": false,
"estimatedAmount": 0
}
}Limitations and assumptions
- Marker and pollen counts must come from a comparable subsample. Zero marker count is undefined, not absence of pollen; recovery and mixing assumptions are not verified.
- 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 appropriate counting, subsampling and recovery methods for inference beyond these supplied counts.
References
Similar or alternative tools
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