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Overview and Detail + Focus and Context - Coggle Diagram
Overview and Detail + Focus and Context
Smart vis
stem-and-leaf
small repeated glyphs
Motivation
large datasets cannot visualize on one screen
too many cases
small screen
buy more pixels
will run out
too many variables
Details: individual cases/variables and values
Overview
patterns and trends
navigation and search
activities
insights
general start point
Shneiderman mantra:
overview first, zoom and filter, details on demand
combined through time and space
Macro-micro
Zoom: zoom out overview, zoom in details
powers of ten
Padprints: web traversal history
giving presentations
Multiple Views:
separate views for overview and details
Civilization V game: detail + overview (map)
multiple-level views
tiled multi-level
bifocal magnified
Issue: not enough room in overview
reduce data
reduce visual presentation
Fisheye:
context and focus coexist seamlessly amd smoothly
overview and detail in single display
detailed views and overviews without obscuring anything; focus area magnified to show detail, while preserving context, in single display
e.g. US by new yorker
Terminology
focal point
views focus on item
level of detail
importance value or quantity on each element
distance from focus
calculation of how far each data item is from focal point
degree of interest function
function determines how items are rendered
continuous, fitering, step, semantic changes
bifocal display
e.g. TableLens: calendar
Disadvantages
annoying distortion
difficult to implement
change in focal point -> recalculate DoI and re-render for all objects -> expensive