Table Lens UCI表镜UCI.pptVIP

Table Lens Introduction to the Table Lens concept Table Lens Implementation Projected Usage Scenarios Usage Comparison with Splus Critical Analysis Interfacing with Tables Tables as a common representation Regularized content Instance vs. Value Layout Large raw tables are uninterpretable Table Views Two common modes of interface Focus: User examines as many fields as will fit on her screen (660 cells) Sacrifices relationships for detail Context: A generated representation of broad dataset it examined High-level interpretation with no specifics Table Lens Lenses are devices which focus attention on part of a large context Table Lens allows both Focus and Context views simultaneously Tables are regular Deformations are also regular Lensing creates categories of detail Categories of detail Central areas of lens have highest levels of detail Row and Column focal have less detail Non-focal areas have sharply reduced detail but are still present Degree of Interest Detail categorization and Visualization based on Degree of Interest calculation DOI Translates to cell size along 2 independent axes Binary correspondence in each dimension Table Lens Benefits Table Lens can display both focus and context Much more data can be displayed at once 30 – 100 times basic spreadsheet Allows simultaneous view of: Variable value distribution shape Inter-variable correlation Specific instance values Outlier identification Table Lens Implementation Interactive manipulation of focus – Atomic operations Zoom: Enlargement of focal area Ajust: Expansion of focal contents Slide: Positioning of focal area Composite manipulation Adjust-zoom: Adds items to focus while expanding focal area Multiple Foci Multiple focal areas are supported Important use modifications Adjust corrupts display Zoom required to be global Graphical Cell Representation Presentation factors Value Value Type DOI (Region) Type Cell Size User Choices Spotlighting Other Features Ascending/Descending Sorting Spotlighting