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Map quality

Physical quality

  • MAPQUAL
    • Traditionally more geared towards printed representation
    • More condensed visualization (high information density)
      • (i.e. often smaller in size to fit screen/paper)
  • SEQUAL
    • Model environment guidelines

Empirical quality

  • MAPQUAL
    • Cartographic principles
    • Colours heavily used (Bertin etc)
    • Shapes should consider their geographical attributes
    • Location of shapes are bound by geographical attributes
      • Automatic layout of concepts are bound/driven by geographical attributes
    • Aesthetics is orthogonal with geographical attributes
    • Visualization is (often) inherently concrete
  • SEQUAL
    • Graph aesthetics driving guidelines
    • Colour not commonly used - but suggested to use more often
    • Location of shapes (often) free to choose (except topology)
      • Automatic layout to improve aesthetics
    • Visualization is inherently abstract
  • Similarities
    • Background guidelines similar (Gestalt and Bertin)
    • Empirical goal (distinguish elements)

Syntactical quality

  • MAPQUAL and SEQUAL are similar

Semantic quality

  • MAPQUAL and SEQUAL are similar

Pragmatic quality

  • MAPQUAL and SEQUAL are similar
  • Important quality to investigate/utilize

Social quality

  • MAPQUAL and SEQUAL are similar

Organizational quality

  • MAPQUAL and SEQUAL are similar

Language quality

Meta-Meta Model

  • Inherently different
    • Cartography; point, line, area (concept, concept, concept)?
    • ConcModel; line, area (relation, concept)

Domain appropriateness

  • MAPQUAL and SEQUAL similar
  • Cause: Cartography lacks language and domain discussion/separation/definitions

Participant appropriateness

  • Cartography; exploiting "natural/cognitive knowledge" of participants - avoid learning new language
  • MAPQUAL and SEQUAL fairly similar

Cartographer appropriateness

  • MAPQUAL and SEQUAL similar

Comprehensibility appropriateness

  • Conceptual basis
    • MQ and SQ Similar
  • External representation
    • Visual variables
      • MAPQUAL
        • Allow for more colours
        • Texture as variable
    • Composition of symbols
      • (Graph) Aesthetics vs. geographical constraint
    • SEQUAL:
      • Placement of shapes indicate ordering - generally not "allowed" in cartography
      • Linking line represent relationship - not (at all) in cartography
      • Graphical effects of linking line represent attribute of relationship - not applicable due to lack of relationship etc..
      • thickness of linking line - not applicable
      • Shape with tab and sockets - not applicable in cartography

Tool appropriateness

  • MQ and SQ similar

Org. appropriateness

  • MQ and SQ similar



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