Proportion Compliance Tolerance Checker (±2%)
Compare relative hoist/fly ratio error, not separate dimensional tolerances or flag-code compliance.±2%example is caller policy only.
Description
Relative proportion error compares an observed hoist-to-fly ratio with a verified target ratio.
Relative proportion error compares an observed hoist-to-fly ratio with a verified target ratio.1
It measures shape agreement under your tolerance rather than separate length tolerances.
When to use Proportion Compliance Tolerance Checker (±2%)
Use this tool when you need to reproduce the stated calculation from measured records or independently selected model inputs. Establish the flag dimensions, orientation, specification, palette, or visual annotations needed for this particular calculation.
How to use Proportion Compliance Tolerance Checker (±2%) and understand its results
- Establish the flag dimensions, orientation, specification, palette, or visual annotations needed for this particular calculation.
- Enter observedHoist, observedFly, referenceHoistUnits, referenceFlyUnits, callerRelativeTolerance, following the field table and rules below, then run the tool.
- Read result. Use the output meanings below to interpret units, signs, flags, and any nested result fields.
- Correct reported input issues and run again. For a successful result, check the stated evidence coverage and assumptions before using it in your review.
| Input field | Meaning | Value type | Requirement |
|---|---|---|---|
| observedHoist | Observed hoist | number | Required |
| observedFly | Observed fly | number | Required |
| referenceHoistUnits | Reference hoist units | number | Required |
| referenceFlyUnits | Reference fly units | number | Required |
| callerRelativeTolerance | Caller relative tolerance | number | Required |
All observed and reference dimensions must be positive; relative tolerance must be nonnegative. Divide observed ratio by reference ratio and subtract one. The screen includes equality at either tolerance boundary; a tolerance of 0.02 means two percent relative ratio error.
error=(H_obs/F_obs)/(H_ref/F_ref)−1; within=|error|≤tolerance Symbols follow the input and output meanings and the calculation rules above.
| Output field | Meaning | Value type |
|---|---|---|
| result | Calculated observation or reference | object |
| result.relativeHoistFlyError | Relative Hoist Fly Error | number |
| result.withinCallerTolerance | Within Caller Tolerance | boolean |
{
"input": {
"observedHoist": 100,
"observedFly": 153,
"referenceHoistUnits": 2,
"referenceFlyUnits": 3,
"callerRelativeTolerance": 0.02
},
"output": {
"result": {
"relativeHoistFlyError": -0.019607843137254832,
"withinCallerTolerance": true
}
}
}Limitations and assumptions
The calculation uses supplied geometry, observations, or annotations. It does not establish an official construction specification, national identity, or universal design quality.
Missing required fields, unknown fields, wrong types, and violated calculation rules are input issues. Numeric values must be finite; nonfinite results are rejected. Extremely large composite outputs are rejected.
Alternative or Complementary methods
For a related review, use Flag Aspect Ratio Checker: Flag proportions conventionally distinguish hoist from fly. Comparing the observed hoist-to-fly ratio with a verified reference exposes the signed shape discrepancy. For a complementary step, use US Canton Stripe Height Fraction Calculator: In the ideal equal-stripe US flag model, the canton height spans seven of the thirteen stripe heights. Scaling that construction from a supplied hoist gives stripe and canton heights in the same unit.
References
Similar or alternative tools
- Flag Aspect Ratio Checker
Flag proportions conventionally distinguish hoist from fly. Comparing the observed hoist-to-fly ratio with a verified reference exposes the signed shape discrepancy.
- US Canton Stripe Height Fraction Calculator
In the ideal equal-stripe US flag model, the canton height spans seven of the thirteen stripe heights. Scaling that construction from a supplied hoist gives stripe and canton heights in the same unit.