Mohammadi-Aragh, Mahnas JeanJankun-Kelly, T. J.Ken Brodlie and David Duke and Ken Joy2014-01-312014-01-3120053-905673-19-31727-5296https://doi.org/10.2312/VisSym/EuroVis05/231-238Visualizing hierarchical data is one of the core areas of information visualization. Most of these techniques focus on single hierarchies hierarchies with a single root element and a single path to each element. In contrast, this work focuses on the browsing of multi-hierarchies hierarchies with multiple roots or multiple paths per element. A radial focus+context display algorithm and interaction methods are introduced to explore such multi-hierarchical data. A series of examples demonstrate the effectiveness of our new visualization. Keywords: information visualization, focus+context, radial layout, hierarchical visualizationCategories and Subject Descriptors (according to ACM CCS): I.3.3 [Computer Graphics]: Picture/Image Generation-Viewing Algorithms; I.3.6 [Computer Graphics]: Methodology and Techniques-Interaction Techniques