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Authors: Miguel Nunes 1 ; Kresimir Matkovic 1 and Katja Bühler 2

Affiliations: 1 VRVis Research Center, Austria ; 2 VRVis Reserch Center, Austria

Keyword(s): Visual Analytics, Convex Hull Brush, Scatter Plots, Linked Views, Correlation.

Related Ontology Subjects/Areas/Topics: Abstract Data Visualization ; Computer Vision, Visualization and Computer Graphics ; General Data Visualization ; Information and Scientific Visualization ; Visual Representation and Interaction

Abstract: Interactive Visual Analysis has been widely used for the reason that it allows users to investigate highly complex data in coordinated multiple views, showing different perspectives over data. In order to relate data, multiple techniques of brushing have been introduced. This work extends the state of the art by introducing the Convex Hull (CH) Brush, which is a new way of selecting and interpreting high dimensional data in scatter plot (SP) views. By using a combination of brushes through linked views, the CH-Brush allows the selection and clustering of values that are not typically defined by SP ranges, in spite of sharing similarities. In CHBrushing is also able to visually report the existence of correlation between variables. Furthermore, we discuss CH-Brushing sensitivity and the application of smoothness. We use synthetic data to support our rationale and clarify the intrinsic meanings of CH-Brushing in scatter plots. We also report on the first experience on using th e CH-Brush in a real-world medical case. (More)

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Paper citation in several formats:
Nunes, M. ; Matkovic, K. and Bühler, K. (2015). Convex Hull Brushing in Scatter Plots - Multi-dimensional Correlation Analysis. In Proceedings of the 6th International Conference on Information Visualization Theory and Applications (VISIGRAPP 2015) - IVAPP; ISBN 978-989-758-088-8; ISSN 2184-4321, SciTePress, pages 182-189. DOI: 10.5220/0005356501820189

@conference{ivapp15,
author={Miguel Nunes and Kresimir Matkovic and Katja Bühler},
title={Convex Hull Brushing in Scatter Plots - Multi-dimensional Correlation Analysis},
booktitle={Proceedings of the 6th International Conference on Information Visualization Theory and Applications (VISIGRAPP 2015) - IVAPP},
year={2015},
pages={182-189},
publisher={SciTePress},
organization={INSTICC},
doi={10.5220/0005356501820189},
isbn={978-989-758-088-8},
issn={2184-4321},
}

TY - CONF

JO - Proceedings of the 6th International Conference on Information Visualization Theory and Applications (VISIGRAPP 2015) - IVAPP
TI - Convex Hull Brushing in Scatter Plots - Multi-dimensional Correlation Analysis
SN - 978-989-758-088-8
IS - 2184-4321
AU - Nunes, M.
AU - Matkovic, K.
AU - Bühler, K.
PY - 2015
SP - 182
EP - 189
DO - 10.5220/0005356501820189
PB - SciTePress