Description
Return effective rows and retained first rows/effective rows, or zero with defined=false when none remain.
Ecological observation summaries depend on sampling effort, eligible time, classified counts and missingness policies. Flower-minutes, area-days and observed proportions have different denominators. Observation support is distinct from true abundance, detection probability or a causal biological-control effect.
Return effective rows and retained first rows/effective rows, or zero with defined=false when none remain.
When to use this tool
Use Intercrop Row Proportion when checking the stated observation support, exposure, sample or seasonal-gap convention.
How to use the tool and how it works
- Enter firstRows, secondRows, excludedFirst, excludedSecond. Use the units and conventions below.
- Run the tool. Correct any format, range, or cross-field input error before interpreting the output.
- Read firstShare, effectiveRows, defined. Inspect defined before interpreting the associated values.
Require whole nonnegative row counts and excluded counts within each total. Return effective rows and retained first rows/effective rows, or zero with defined=false when none remain.1
| Input field | Meaning and units | Accepted input |
|---|---|---|
| firstRows | First Rows | Required. Safe integer; minimum 0. |
| secondRows | Second Rows | Required. Safe integer; minimum 0. |
| excludedFirst | Excluded First | Required. Safe integer; minimum 0. |
| excludedSecond | Excluded Second | Required. Safe integer; minimum 0. |
| Output field | Interpretation | Returned shape |
|---|---|---|
| firstShare | First Share | Required. Finite number. |
| effectiveRows | Effective Rows | Required. Safe integer. |
| defined | Whether the corresponding reporting denominator/value is defined; inspect before interpreting zero placeholders. | Required. Boolean. |
{
"input": {
"firstRows": 4,
"secondRows": 6,
"excludedFirst": 1,
"excludedSecond": 1
},
"output": {
"firstShare": 0.375,
"effectiveRows": 8,
"defined": true
}
}Limitations and assumptions
- Rows receive equal count weight regardless of width or yield; no spatial layout is reconstructed.
- 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 verified representative field records and suitable sampling/detection analysis for ecological inference, uncertainty and management.
References
Similar or alternative tools
- Pollinator Valid Window Share
Eligible duration requires flowering and valid weather; observed eligible duration requires all three.
- Groundcover Bare Soil Fraction Gap
Return bareFraction=1-cover and signed observed-minus-target coverGap.