Description
Return portfolio-image aspect ratio and reference factor.
Artwork measurements distinguish physical dimensions, projected regions and scale conventions. Length, area and volume change with different powers of a scale, while frame overlaps and crop geometry depend on which boundaries were measured. A numerical fit does not identify an artwork or establish its historical interpretation.
Return portfolio-image aspect ratio and reference factor.
When to use this tool
Use Portfolio Image Aspect Factor when checking the stated artwork dimension, crop, frame or scale relation.
How to use the tool and how it works
- Enter width, height, referenceAspect. Use the units and conventions below.
- Run the tool. Correct any format, range, or cross-field input error before interpreting the output.
- Read aspect, factor. Use the output convention below.
Return portfolio-image aspect ratio and reference factor. Require positive width/height/referenceAspect; aspect = width/height, factor = aspect/referenceAspect.1
| Input field | Meaning and units | Accepted input |
|---|---|---|
| width | Width | Required. Finite number; strictly above 0. |
| height | Height | Required. Finite number; strictly above 0. |
| referenceAspect | Reference Aspect | Required. Finite number; strictly above 0. |
| Output field | Interpretation | Returned shape |
|---|---|---|
| aspect | Aspect | Required. Finite number. |
| factor | Factor | Required. Finite number. |
{
"input": {
"width": 600,
"height": 400,
"referenceAspect": 1
},
"output": {
"aspect": 1.5,
"factor": 1.5
}
}Limitations and assumptions
- No cropping, rotation, image quality or appropriate portfolio layout is selected.
- 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
Inspect the original object, measured boundaries and appropriate complete geometry or catalog record for physical or historical conclusions.
References
Similar or alternative tools
- Portfolio Spread Bleed Budget
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- Perspective Exercise Measured Convergence Gap
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