What are Table Cartograms Good for Anyway? An Algebraic Analysis

Unfamiliar or esoteric visual forms arise in many areas of visualization. While such forms can be intriguing, it can be unclear how to make effective use of them without long periods of practice or costly user studies. In this work we analyze the table cartogram—a graphic which visualizes tabular da...

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Bibliographic Details
Published in:Computer graphics forum 2021-06, Vol.40 (3), p.61-73
Main Author: McNutt, A.
Format: Article
Language:English
Subjects:
Algebra
Best practice
CCS Concepts
Cost analysis
Data analysis
Human‐centered computing → Visualization design and evaluation methods
Outliers (statistics)
Quadrilaterals
Scientific visualization
Tables (data)
Visualization
Visualization theory, concepts and paradigms
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Summary:Unfamiliar or esoteric visual forms arise in many areas of visualization. While such forms can be intriguing, it can be unclear how to make effective use of them without long periods of practice or costly user studies. In this work we analyze the table cartogram—a graphic which visualizes tabular data by bringing the areas of a grid of quadrilaterals into correspondence with the input data, like a heat map that has been “area‐ed” rather than colored. Despite having existed for several years, little is known about its appropriate usage. We mend this gap by using Algebraic Visualization Design to show that they are best suited to relatively small tables with ordinal axes for some comparison and outlier identification tasks. In doing so we demonstrate a discount theory‐based analysis that can be used to cheaply determine best practices for unknown visualizations.
ISSN:0167-7055
1467-8659
DOI:10.1111/cgf.14289