Description
Return comoving-bin share under an exclusion policy.
Survey geometry combines solid angle, radial distance and a stated coordinate or selection basis. A sky fraction, bin midpoint or thin-shell term is a local geometric quantity rather than an integrated survey volume, observed population or selection-corrected estimate.
Return comoving-bin share under an exclusion policy.
When to use this tool
Use Comoving Bin Volume Share when checking the stated survey-area, bin or comoving-volume term.
How to use the tool and how it works
- Enter binVolume, totalVolume, excludedVolume, excludeMarked. Use the units and conventions below.
- Run the tool. Correct any format, range, or cross-field input error before interpreting the output.
- Read denominatorVolume, share. Use the output convention below.
Return comoving-bin share under an exclusion policy. Require totalVolume > 0, 0 <= excludedVolume < total and 0 <= binVolume <= total-excluded; denominator subtracts exclusions only when excludeMarked.1
| Input field | Meaning and units | Accepted input |
|---|---|---|
| binVolume | Bin Volume | Required. Finite number; minimum 0. |
| totalVolume | Total Volume | Required. Finite number; strictly above 0. |
| excludedVolume | Excluded Volume | Required. Finite number; minimum 0. |
| excludeMarked | Exclude Marked | Required. Boolean. |
| Output field | Interpretation | Returned shape |
|---|---|---|
| denominatorVolume | Denominator Volume | Required. Finite number. |
| share | Dimensionless numerator/denominator ratio under the explicit basis above. | Required. Finite number. |
{
"input": {
"binVolume": 20,
"totalVolume": 100,
"excludedVolume": 20,
"excludeMarked": true
},
"output": {
"denominatorVolume": 80,
"share": 0.25
}
}Limitations and assumptions
- The volumes and mask are supplied; no cosmological volume integration, overlap audit or survey selection correction occurs.
- 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
Integrate the appropriate cosmological volume element and actual survey mask/selection function for complete coverage or number-count analysis.
References
Similar or alternative tools
- Comoving Volume Solid Angle One Shell Term
Return a thin comoving shell volume term.
- Cosmological Angle Radian Basis Token Tool
Convert a supplied angle with its explicit source-unit factor; no angular-diameter distance is inferred.