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diagram-design/references/type-quadrant.md
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Cathryn Lavery 53bd8dde0f Initial release: diagram-design v1.0
Thirteen editorial diagram types (architecture, flowchart, sequence,
state, ER, timeline, swimlane, quadrant, nested, tree, layers, venn,
pyramid) as self-contained HTML files with inline SVG.

Progressive disclosure: lean SKILL.md points to per-type references.
Neutral stone+rust default skin, first-run gate that prompts users
to customize the style guide from their own website, URL-based
onboarding, annotation-callout primitive, sketchy filter variant,
live gallery at assets/index.html.
2026-04-16 13:30:53 -05:00

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Quadrant

Best for: prioritization (Impact × Effort), positioning (Reach × Frequency), portfolio maps, 2×2 decision frames.

Layout conventions

  • 2×2 grid. Axis lines: 1px ink cross through the center.
  • Axis labels at the ends of each axis (e.g., HIGH IMPACT → on the right, LOW IMPACT ← on the left — Geist Mono eyebrow). Never label at the midpoint.
  • Items: small labeled dots (r=4) positioned in the quadrants. Labels 8–10px away; don't let labels cross axis lines.
  • Coral on the "do first" item (typically top-right).
  • Limit to ~12 items; cluster or split beyond that.

Anti-patterns

  • Four filled quadrants in different colors — position + label does the work; color noise weakens it.
  • Items placed on axis lines (ambiguous quadrant).
  • Missing axis names.

Examples

  • assets/example-quadrant.html — minimal light
  • assets/example-quadrant-dark.html — minimal dark
  • assets/example-quadrant-full.html — full editorial