Portfolio Spread Image Count Capacity Tool

Description

Return portfolio image-slot capacity and signed remainder.

Studio-class budgets allocate supplied time, turns, places and materials. Reserved quantities and shared work affect the reporting denominator, and a negative remainder or undefined per-person amount is useful bookkeeping information. These arithmetic checks do not assess learning quality, accessibility or whether a real class can safely perform an activity.

Return portfolio image-slot capacity and signed remainder.

When to use this tool

Use Portfolio Spread Image Count Capacity when checking the stated studio allocation, participation, capacity or time budget.

How to use the tool and how it works

Enter spreads, imagesPerSpread, reservedSlots, requiredImages. Use the units and conventions below.
Run the tool. Correct any format, range, or cross-field input error before interpreting the output.
Read usableSlots, remainingSlots, missingSlots. Use the output convention below.

Return portfolio image-slot capacity and signed remainder. Require nonnegative whole counts and reservedSlots <= spreads*imagesPerSpread; usable subtracts reserved, remaining subtracts requiredImages, missing floors negative remaining at zero.^[1]

Input field	Meaning and units	Accepted input
spreads	Spreads	Required. Safe integer; minimum 0.
imagesPerSpread	Images Per Spread	Required. Safe integer; minimum 0.
reservedSlots	Reserved Slots	Required. Safe integer; minimum 0.
requiredImages	Required Images	Required. Safe integer; minimum 0.

Output field	Interpretation	Returned shape
usableSlots	Usable Slots	Required. Safe integer.
remainingSlots	Remaining Slots	Required. Safe integer.
missingSlots	Missing Slots	Required. Safe integer.

json

{
  "input": {
    "spreads": 10,
    "imagesPerSpread": 4,
    "reservedSlots": 5,
    "requiredImages": 30
  },
  "output": {
    "usableSlots": 35,
    "remainingSlots": 5,
    "missingSlots": 0
  }
}

Limitations and assumptions

Slots are abstract counts; image size, page layout, accessibility and artistic quality are not evaluated.
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

Review the actual class plan, learner needs, usable resources and supervision requirements before organizing an activity.

References

Calculation and input contract: art-education/portfolio-spread-image-count-capacity — tool.io

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