Description
Convert nonnegative fieldDiameter using positive suppliedLengthUnitFactor, compute circular area from half that diameter, and multiply by fields-excludedFields.
Microscope and blood-component geometry relates pixel scale, field area, mass, volume, and sampling extent. A geometric conversion does not verify cell identity, specimen quality, or clinical suitability.
Convert nonnegative fieldDiameter using positive suppliedLengthUnitFactor, compute circular area from half that diameter, and multiply by fields-excludedFields.
When to use this tool
Use Research Smear Field Area when you need one explicit research measurement or geometric component.
How to use the tool and how it works
- Enter fieldDiameter, suppliedLengthUnitFactor, fields, excludedFields. Use the units and conventions below.
- Run the tool. Correct any format, range, or cross-field input error before interpreting the output.
- Read singleArea, totalArea. Use the output convention below.
Convert nonnegative fieldDiameter using positive suppliedLengthUnitFactor, compute circular area from half that diameter, and multiply by fields-excludedFields.1
| Input field | Meaning and units | Accepted input |
|---|---|---|
| fieldDiameter | Field Diameter | Required. Finite number; minimum 0. |
| suppliedLengthUnitFactor | Supplied Length Unit Factor | Required. Finite number; strictly above 0. |
| fields | Fields | Required. Safe integer; minimum 0. |
| excludedFields | Excluded Fields | Required. Safe integer; minimum 0. |
| Output field | Interpretation | Returned shape |
|---|---|---|
| singleArea | Single Area | Required. Finite number. |
| totalArea | Total Area | Required. Finite number. |
{
"input": {
"fieldDiameter": 2,
"suppliedLengthUnitFactor": 1,
"fields": 10,
"excludedFields": 2
},
"output": {
"singleArea": 3.141592653589793,
"totalArea": 25.132741228718345
}
}Limitations and assumptions
- The factor maps input length to the intended physical length unit; excluded fields lie within total fields and no microscope calibration, representative sampling, or diagnosis is 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
Verify calibration, specimen handling, sampling, and professional laboratory interpretation separately.
References
Similar or alternative tools
- Smear Field Scale Area
Multiply nonnegative integer fieldPixelArea by positive lengthPerPixel squared for physicalArea.
- Platelet Research Field Area Normalizer
Return fields × area, observed per sampled area, and that rate times referenceArea.