Description
Return available manuscript margin and image-to-margin ratio.
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 available manuscript margin and image-to-margin ratio.
When to use this tool
Use Manuscript Margin Image Area Ratio when checking the stated artwork dimension, crop, frame or scale relation.
How to use the tool and how it works
- Enter pageArea, imageArea, excludedMargin. Use the units and conventions below.
- Run the tool. Correct any format, range, or cross-field input error before interpreting the output.
- Read availableMargin, imageToMargin. Use the output convention below.
Return available manuscript margin and image-to-margin ratio. Require nonnegative image/excluded areas and pageArea > their sum; availableMargin = page-image-excluded, ratio = image/availableMargin.1
| Input field | Meaning and units | Accepted input |
|---|---|---|
| pageArea | Page Area | Required. Finite number. |
| imageArea | Image Area | Required. Finite number; minimum 0. |
| excludedMargin | Excluded Margin | Required. Finite number; minimum 0. |
| Output field | Interpretation | Returned shape |
|---|---|---|
| availableMargin | Available Margin | Required. Finite number. |
| imageToMargin | Image To Margin | Required. Finite number. |
{
"input": {
"pageArea": 100,
"imageArea": 40,
"excludedMargin": 10
},
"output": {
"availableMargin": 50,
"imageToMargin": 0.8
}
}Limitations and assumptions
- The margin definition and exclusions are supplied; no page segmentation, interpretation or source authenticity 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
Inspect the original object, measured boundaries and appropriate complete geometry or catalog record for physical or historical conclusions.
References
Similar or alternative tools
- Manuscript Miniature Text Area Share
Return miniature, text and unallocated page-area fractions.
- Print Plate Mark Sheet Margin
Return centered margins between a plate mark and sheet.