Designing Animated Transitions to Convey Aggregate Operations

Data can be aggregated in many ways before being visualized in charts, profoundly affecting what a chart conveys. Despite this importance, the type of aggregation is often communicated only via axis titles. In this paper, we investigate the use of animation to disambiguate different types of aggrega...

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Bibliographic Details
Published in:Computer graphics forum Vol. 38; no. 3; pp. 541 - 551
Main Authors: Kim, Younghoon, Correll, Michael, Heer, Jeffrey
Format: Journal Article
Language:English
Published: Oxford Blackwell Publishing Ltd 01.06.2019
Subjects:
Agglomeration
Animation
CCS Concepts
Charts
Confidence intervals
Design
Human‐centered computing → Visualization design and evaluation methods
Information visualization
Judgments
Qualitative analysis
ISSN:0167-7055, 1467-8659
Online Access:Get full text
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Summary:Data can be aggregated in many ways before being visualized in charts, profoundly affecting what a chart conveys. Despite this importance, the type of aggregation is often communicated only via axis titles. In this paper, we investigate the use of animation to disambiguate different types of aggregation and communicate the meaning of aggregate operations. We present design rationales for animated transitions depicting aggregate operations and present the results of an experiment assessing the impact of these different transitions on identification tasks. We find that judiciously staged animated transitions can improve subjects' accuracy at identifying the aggregation performed, though sometimes with longer response times than with static transitions. Through an analysis of participants' rankings and qualitative responses, we find a consistent preference for animation over static transitions and highlight visual features subjects report relying on to make their judgments. We conclude by extending our animation designs to more complex charts of aggregated data such as box plots and bootstrapped confidence intervals.
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ISSN:0167-7055
1467-8659
DOI:10.1111/cgf.13709