TY - CPAPER SN - 978-3-319-25117-2 AU - Beck, Fabian AU - Burch, Michael AU - Munz, Tanja AU - Di Silvestro, Lorenzo AU - Weiskopf, Daniel T1 - Generalized Pythagoras Trees T2 - 9th Joint Conference on Computer Vision, Imaging and Computer Graphics Theory and Applications ED - Battiato, Sebastiano ED - Coquillart, Sabine ED - Pettré, Julien ED - Laramee, Robert S. ED - Kerren, Andreas ED - Braz, Jose PY - 2015 CY - Cham PB - Springer International Publishing SV - 550 SP - 115 EP - 135 T3 - Communications in Computer and Information Science AB - Through their recursive definition, many fractals have an inherent hierarchical structure. An example are binary branching Pythagoras Trees. By stopping the recursion in certain branches, a binary hierarchy can be encoded and visualized. But this binary encoding is an obstacle for representing general hierarchical data such as file systems or phylogenetic trees, which usually branch into more than two subhierarchies. We hence extend Pythagoras Trees to arbitrarily branching trees by adapting the geometry of the original fractal approach. Each vertex in the hierarchy is visualized as a rectangle sized according to a metric. We analyze several visual parameters such as length, width, order, and color of the nodes against the use of different metrics. Interactions help to zoom, browse, and filter the hierarchy. The usefulness of our technique is illustrated by two case studies visualizing directory structures and a large phylogenetic tree. We compare our approach with existing tree diagrams and discuss questions of geometry, perception, readability, and aesthetics. DO - 10.1007/978-3-319-25117-2_8 T4 - A Fractal Approach to Hierarchy Visualization C7 - VISIGRAPP 2014 C1 - Lissabon, 5. - 8. Januar 2014 M4 - Citavi ER -