Description
Append parentheses and return numeric uncertaintyDigits times 10 to the negative fractional-place count.
Measurement uncertainty notation needs a declared numerical scale, unit and interpretation. Parenthesized digits can refer to the last written places, while a coverage-factor suffix is only a label unless an uncertainty calculation supports it.
Append parentheses and return numeric uncertaintyDigits times 10 to the negative fractional-place count.
When to use this tool
Use Formatting: Decimal Uncertainty Last Place Label when you need the specified uncertainty-text layout or last-place conversion.
How to use the tool and how it works
- Enter valueLiteral, uncertaintyDigits. Use the units and conventions below.
- Run the tool. Correct any format, range, or cross-field input error before interpreting the output.
- Read result. Expand result to inspect the returned fields.
Require signed decimal valueLiteral with 1-12 digits in each present part and 1-6 uncertainty digits. Append parentheses and return numeric uncertaintyDigits times 10 to the negative fractional-place count.1
The parenthesis convention scales uncertainty digits to the final written place. The formatter does not estimate uncertainty or coverage.2
| Input field | Meaning and units | Accepted input |
|---|---|---|
| valueLiteral | Value Literal | Required. Text. Implementation limit: 8192 Unicode code points and 16384 UTF-16 code units. |
| uncertaintyDigits | Uncertainty Digits | Required. Text. Implementation limit: 8192 Unicode code points and 16384 UTF-16 code units. |
| Output field | Interpretation | Returned shape |
|---|---|---|
| result | Object containing the calculated members; expand to inspect the fields below. | Required. Object. |
| result.label | Literal label; no independent factual or authorization verdict. | Calculated result member: string. |
| result.absoluteUncertainty | Uncertainty digits scaled to the last written decimal place, in the value unit. | Calculated result member: number. |
{
"input": {
"valueLiteral": "1.230",
"uncertaintyDigits": "12"
},
"output": {
"result": {
"label": "1.230(12)",
"absoluteUncertainty": 0.012
}
}
}Limitations and assumptions
- The digits express absolute uncertainty in the last written place, in the value's unit. They are not a measured confidence level, and value spelling is preserved without rounding.
- Outputs are nested inside result. 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.
Alternative or Complementary methods
Use an appropriate uncertainty analysis and reporting convention for real measurements. Verify units, decimal alignment, uncertainty type and coverage meaning separately from formatting.
References
Similar or alternative tools
- Uncertainty Digits Alignment Pair
Join value and parenthesized uncertainty digits.
- Decimal Trailing Zero Significance Tag
Count written decimal places and fractional trailing zeros.