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Quadrant Chart

scientific-skills/markdown-mermaid-writing/references/diagrams/quadrant.md

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Quadrant Chart

Back to Style Guide — Read the style guide first for emoji, color, and accessibility rules.

Syntax keyword: quadrantChart Best for: Prioritization matrices, risk assessment, two-axis comparisons, effort/impact analysis When NOT to use: Time-based data (use Gantt or XY Chart), simple rankings (use a table)

⚠️ Accessibility: Quadrant charts do not support accTitle/accDescr. Always place a descriptive italic Markdown paragraph directly above the code block.


Exemplar Diagram

Priority matrix plotting engineering initiatives by effort required versus business impact, helping teams decide what to build next:

mermaid
quadrantChart
    title 🎯 Engineering Priority Matrix
    x-axis Low Effort --> High Effort
    y-axis Low Impact --> High Impact
    quadrant-1 Do First
    quadrant-2 Plan Carefully
    quadrant-3 Reconsider
    quadrant-4 Quick Wins
    Upgrade auth library: [0.3, 0.9]
    Migrate to new DB: [0.9, 0.8]
    Fix typos in docs: [0.1, 0.2]
    Add dark mode: [0.4, 0.6]
    Rewrite legacy API: [0.95, 0.95]
    Update CI cache: [0.15, 0.5]
    Add unit tests: [0.5, 0.7]

Tips

  • Label axes with Low X --> High X format
  • Name all four quadrants with actionable labels
  • Plot items as Name: [x, y] with values 0.0–1.0
  • Limit to 5–10 items — more becomes cluttered
  • Quadrant numbering: 1=top-right, 2=top-left, 3=bottom-left, 4=bottom-right
  • Always pair with a Markdown text description above for screen readers

Template

Description of the two axes and what the quadrant placement means:

mermaid
quadrantChart
    title 🎯 Your Matrix Title
    x-axis Low X Axis --> High X Axis
    y-axis Low Y Axis --> High Y Axis
    quadrant-1 High Both
    quadrant-2 High Y Only
    quadrant-3 Low Both
    quadrant-4 High X Only
    Item A: [0.3, 0.8]
    Item B: [0.7, 0.6]
    Item C: [0.2, 0.3]