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Design Tasks Envisioning Information

• CPSC 533C
• Ming Huan Lee
• February 24, 2003

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Agenda

• Escaping Flatland
• Micro/Macro Readings
• Layering and Separation

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Escaping Flatland

• communication between the readers and makers of
  an image must take place on a two-dimensional
  surface (flatlands of paper and video screen)
• design strategies work to increase
• the number of dimensions that can be represented
  on place surfaces
• the data density (amount of information per unit
  data)

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Direct Methods
C
solid geometry
A
B

• making models

solar system
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Stereo Illustration

• paired images (one for each eye)
• aerial landscapes, molecular structures and other
  worldly objects
• rare for representations of abstract and ragged
  quantitative data

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solar disk
dimensionality data compression
multiple images
parallel sequencing micro/macro displays
combining pattern and detail, average and
variation
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Dimensions Data Density
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Difficulties of Escaping Flatland

• ties of data to our familiar three-space world
  weaken (with more abstract measures)
• the number of dimensions increases (with more
  complex data)

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Micro/Macro Readings

• to clarify, add detail

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Micro/Macro Readings
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Micro/Macro Readings

• portray large quantities of data at high density
• data-thin displays diminish the credibility of
  the source
• when making a contrast, a comparison,or a choice
• visual displays rich with data are frequently
  optimal
• vacant, low density displays require viewers to
  rely on visual memory
• enforce both local and global comparisons, and
  avoid the disruption of context switching
• control of information is given over to viewers
  (to select, to narrate, to recast and to
  personalize data)

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Micro/Macro Readings

• confusing clutter? Information overload?
• the quantity of detail is an issue completely
  separate from the difficulty of reading
• clutter and confusion are failures of design, not
  attributes of information
• less complex and less subtle the line, the more
  ambiguous and less interesting is the reading
• simpleness of data and design clarity of
  reading?
• simpleness is aesthetic preference, not an
  information display strategy, not a guide to
  clarity

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Layering and Separation

• powerful devices for reducing noise and enriching
  the content of displays
• 1 1 3 or more effect
• illusory contour
• can fail if not use properly
• proportion harmony
• de-emphasize less important data, add new
  information

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1 1 3 or Not
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Layering and Separation

• information consists of difference that make a
  difference
• failure to differentiate among layers of reading
  leads to cluttered and incoherent displays filled
  with disinformation