Description
Compare waist ease with supplied elastic stretch dimensions.
Garment geometry distinguishes body and finished dimensions, elastic rest length, seamline/cutline offsets, motif phases and joining losses. A nominal coordinate or length budget does not establish material behavior or a suitable fit. Direction, angle units and the number of gaps rather than objects affect the result.
Compare waist ease with supplied elastic stretch dimensions.
When to use this tool
Use Waist Ease Elastic Stretch Difference when checking the stated garment length, allowance, repeat or material-record convention.
How to use the tool and how it works
- Enter garmentWaist, bodyWaist, elasticRestLength. Use the units and conventions below.
- Run the tool. Correct any format, range, or cross-field input error before interpreting the output.
- Read garmentEase, elasticExtension, elasticExtensionFraction. Use the output convention below.
Require nonnegative garment/body waists and elasticRestLength>0. Return garment-body ease, body-rest extension and extension/rest as a signed fraction.1
| Input field | Meaning and units | Accepted input |
|---|---|---|
| garmentWaist | Garment Waist | Required. Finite number; minimum 0. |
| bodyWaist | Body Waist | Required. Finite number; minimum 0. |
| elasticRestLength | Elastic Rest Length | Required. Finite number; strictly above 0. |
| Output field | Interpretation | Returned shape |
|---|---|---|
| garmentEase | Garment Ease | Required. Finite number. |
| elasticExtension | Elastic Extension | Required. Finite number. |
| elasticExtensionFraction | (bodyWaist-elasticRestLength)/elasticRestLength; signed extension, not a recommended strain. | Required. Finite number. |
{
"input": {
"garmentWaist": 84,
"bodyWaist": 80,
"elasticRestLength": 64
},
"output": {
"garmentEase": 4,
"elasticExtension": 16,
"elasticExtensionFraction": 0.25
}
}Limitations and assumptions
- Negative values are retained; no suitable elastic strain, wearer comfort, size recommendation or material behavior is inferred.
- 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 measured pattern/material properties, fitting evidence and appropriate complete production methods for actual garment fit and construction.
References
Similar or alternative tools
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