Honorable Mention

Semantic Resizing of Charts Through Generalization: A Case Study with Line Charts

Vidya Setlur, Haeyong Chung

View presentation: 2021-10-28T15:10:00Z GMT-0600 Change your timezone on the schedule page
2021-10-28T15:10:00Z
Exemplar figure, described by caption below
An example of a line chart automatically generalized to different display sizes. The algorithm preserves the various elements of the line chart based on their semantic importances at a given display size.
Keywords

Multi-Resolution and Level of Detail Techniques, Software Prototype, Visual Representation Design

Abstract

Inspired by cartographic generalization principles, we present a generalization technique for rendering line charts at different sizes, preserving the important semantics of the data at that display size.The algorithm automatically determines the generalization operators to be applied at that size based on spatial density, distance, and the semantic importance of the various visualization elements in the line chart. A qualitative evaluation of the prototype that implemented the algorithm indicates that the generalized line charts pre-served the general data shape, while minimizing visual clutter. We identify future opportunities where generalization can be extended and applied to other chart types and visual analysis authoring tools.