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Brushing and Linking Primitive Evaluation of Hierarchical Data in Linked Visualizations
Linköping University, Department of Science and Technology, Media and Information Technology. Linköping University, Faculty of Science & Engineering.
2023 (English)Independent thesis Advanced level (degree of Master (One Year)), 20 credits / 30 HE creditsStudent thesis
Abstract [en]

The projects research focused on exploring techniques for visualizing and interacting with hierarchical data. It evaluated what are the most common practices for the exploration of hierarchical data and how it can further be designed using brushing and linking. The project was carried out at the Scientific Visualization unit at Linköping University. The work conducted a literature study and an evaluation using user tests. The evaluation is a pilot study where the visualizations, brushing techniques, dataset size, and conduction of the user test are based on a literature study. The study identified node-link diagrams, treemaps, and icicle plots as the most commonly used generic visualization techniques for exploring hierarchical data in research. Along with those visualizations, three brushing approaches linking different nodes to each other (based on different kinds of kinship) were applied in several combinations in prototypes, shown and used in the user tests. The results showed that coordinated multiple views with brushing and linking were frequently employed, allowing users to manipulate and interact with data on one screen while seeing relevant views updated. The study showed that treemaps are often struggling to visualize beyond leaf nodes and node-link diagrams become cluttered. The user study indicated that D-brushing (data brushed in descending directions) was preferred, and certain brushing methods were suitable depending on the task. Since the research is a pilot study, it is recommended to perform additional studies such as further designing brushing to provide a guideline for user freedom in highlighting relationships, and in linked views. Some design suggestions that are worth studying and testing in further work are, for example, using color maps to show the hierarchical attributes and relationships between nodes while brushing, re-layouts of text labels, and ordering nodes alphabetically

Place, publisher, year, edition, pages
2023. , p. 74
Keywords [en]
infovis, brushing, linking, cmv, evaluation, information, visualization, hierarchical, data, node-link, treemap, icicle
National Category
Media and Communication Technology
Identifiers
URN: urn:nbn:se:liu:diva-199784ISRN: LiU-ITN-TEK-A--23/048--SEOAI: oai:DiVA.org:liu-199784DiVA, id: diva2:1821105
Subject / course
Media Technology
Uppsok
Technology
Supervisors
Examiners
Note

Examensarbetet är utfört vid Institutionen för teknik och naturvetenskap (ITN) vid Tekniska fakulteten, Linköpings universitet

Available from: 2023-12-19 Created: 2023-12-19 Last updated: 2023-12-19Bibliographically approved

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CiteExportLink to record
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Citation style
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
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More styles
Language
  • de-DE
  • en-GB
  • en-US
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  • nn-NO
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Output format
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  • text
  • asciidoc
  • rtf