Interaction in Visualization Systems

CPSC 533C Presentation

Zhangbo Liu (Zephyr)

December 7, 2005

Question to this topic:

What & Why?

Interaction

“Interaction involves the transformations that map the data to visual form.”

More than just controls? Integrates controls into the visualization.

Allows for direct manipulations of the graphical representation of the data.

Examples

Ahlberg & Shneideman, The Film Finder

Chuah et al., SDM

Ware, Chapter10, Information Visualization

Munzner,H3

Papers

High interaction graphics. Stephen G. Eick and Graham J. Wills. European Journal of Operational Research, 81:445-459, 1995.

Interactive Visualization of Genealogical Graphs. Michael J. McGuffin and Ravin Balakrishnan. Proc. InfoVis 2005.

Papers

High interaction graphics. Stephen G. Eick and Graham J. Wills. European Journal of Operational Research, 81:445-459, 1995.

Interactive Visualization of Genealogical Graphs. Michael J. McGuffin and Ravin Balakrishnan. Proc. InfoVis 2005.

High Interaction Graphics

ClarityInformation only on demand, cleaner & more focused displays, allow a range of options

RobustnessAvoid drawing inferences from only one view

PowerCombine views, leverage exploration

Possibility3+ dimensional data, animation

Principles

Simple, easy to interpret views Information Hiding Direct Manipulation Linking & Brushing

Linking and Brushing

Linking Visually showing which parts of one data plot

correspond to that of another. Brushing

Allowing the users to move a region (brush) around the data display to highlight points which fall within this region.

Slide adapted from Marti Hearst

Examples

Districts of the city of Dublin showing areas with high levels of average income

Linking altitude to grass and grain types in Scottish Districts

Critique

Pros: Very good survey paper for introduction, general

techniques. Easy to read. Seems like the beginning of a book.

Cons: Examples were somewhat simple, despite

mentioning some complex application domains. Dated. Open issues are easy nowadays.

Papers

High interaction graphics. Stephen G. Eick and Graham J. Wills. European Journal of Operational Research, 81:445-459, 1995.

Interactive Visualization of Genealogical Graphs. Michael J. McGuffin and Ravin Balakrishnan. Proc. InfoVis 2005.

Problem

Family trees are difficult to draw

Proposed solution

Dual-tree based representation

Novel Interaction Technique

Video

User Study

1 practicing genealogist 1 hour session Neural feedbacks, no pros or cons

Critique

Pros: A nice solution for a generally misunderstood gra

ph drawing problem Cool interaction technique for collapsing or expan

ding subtrees Cons:

Requires some background in genealogy Poor user study