Broadsheet Tabloid Fold Column Inches Map

Map actual text-column rectangular area above/below explicit page fold in square inches (traditional width-scaled column-inches); caller defines nonoverlapping column geometry, no paper-format/fold universal constant.

Description

Above-fold allocation depends on measured rectangular columns and a specific fold depth.

Above-fold allocation depends on measured rectangular columns and a specific fold depth. Width-scaled amounts are areas in square inches.^[1]

Enter aligned nonempty positive widths/nonnegative top/bottom depths with bottom≥top and nonnegative fold. Return per-column and total areas above/below.

When to use Broadsheet Tabloid Fold Column Inches Map

Use Broadsheet Tabloid Fold Column Inches Map when you need to evaluate the supplied records under the calculation and evidence rules below. Output names say column inches, but the multiplication uses square inches. No format standard, overlap union or preferred fold is inferred.

Prepare the actual editorial, source, layout, timing or audience records requested. Supply explicit house-policy limits and preserve missing evidence.

How to use Broadsheet Tabloid Fold Column Inches Map and understand its results

Prepare the actual editorial, source, layout, timing or audience records requested. Supply explicit house-policy limits and preserve missing evidence.
Enter columnWidthsInches, columnTopDepthsInches, columnBottomDepthsInches, pageFoldDepthInches using the field table and calculation rules, then run the tool.
Read columnInchesAboveFold, columnInchesBelowFold, totalColumnInchesAboveFold, totalColumnInchesBelowFold. The explanation below defines the units, signs, ordering and any flags or placeholder values.
If the tool reports an input issue, correct the values and run it again. Apply the stated assumptions when interpreting a successfully returned result.

Input field	Meaning	Value type; see rules below	Requirement
columnWidthsInches	Column widths inches	list of number	Required
columnTopDepthsInches	Column top depths inches	list of number	Required
columnBottomDepthsInches	Column bottom depths inches	list of number	Required
pageFoldDepthInches	Page fold depth inches	number	Required

Enter aligned nonempty positive widths/nonnegative top/bottom depths with bottom≥top and nonnegative fold. Return per-column and total areas above/below.

above=width×max(0,min(bottom,fold)−top); below=width×max(0,bottom−max(top,fold))

Units, indexing, boundary conditions and exceptional cases are defined in the calculation rules above.

Output field	Meaning	Value type
columnInchesAboveFold	Column inches above fold	list of number
columnInchesBelowFold	Column inches below fold	list of number
totalColumnInchesAboveFold	Total column inches above fold	number
totalColumnInchesBelowFold	Total column inches below fold	number

json

{
  "input": {
    "columnWidthsInches": [
      2,
      3
    ],
    "columnTopDepthsInches": [
      1,
      4
    ],
    "columnBottomDepthsInches": [
      5,
      8
    ],
    "pageFoldDepthInches": 6
  },
  "output": {
    "columnInchesAboveFold": [
      8,
      6
    ],
    "columnInchesBelowFold": [
      0,
      6
    ],
    "totalColumnInchesAboveFold": 14,
    "totalColumnInchesBelowFold": 6
  }
}

Limitations and assumptions

Output names say column inches, but the multiplication uses square inches. No format standard, overlap union or preferred fold is inferred.

Numeric inputs, where present, must be finite. Follow the calculation-specific rules for overflow, underflow and exceptional cases. Numeric lists are limited to 10,000 entries; string lists to 128 strings of at most 128 characters each. The rules above may impose smaller limits. Missing required fields, extra fields, wrong value types and violations of the calculation rules are input errors.

Alternative or Complementary methods

Use White Space Open Layout Percent Checker: Open layout area is usable area minus disjoint occupied regions. Summing overlapping boxes would overcount occupancy. For a complementary task, use Column Inch to Word Count Density Conversion: Typeset word density can be calibrated from a measured sample. Capacity estimates assume comparable design and content.

References

Broadsheet Tabloid Fold Column Inches Map — tool.io

Similar or alternative tools

White Space Open Layout Percent Checker
Open layout area is usable area minus disjoint occupied regions. Summing overlapping boxes would overcount occupancy.
Column Inch to Word Count Density Conversion
Typeset word density can be calibrated from a measured sample. Capacity estimates assume comparable design and content.