Quantitative Comparison of Treemap Techniques for Time-Dependent Hierarchies
نویسنده
چکیده
Hierarchical data in which leaf nodes have associated attributes appear in several applications. Rectangular Treemaps (RTs) were designed to display this type of data by tightly packing cells representing the tree nodes, with additional information stored in the cell sizes and/or colors. For dynamic hierarchies, RTs have to obey several requirements regarding the optimal aspect ratio of cells, but also the stability of layout in presence of data changes. While static RTs studied the first requirement well, far less information is available on how RTs behave vs both requirements for dynamic data. We study how four known RT methods compare over several real-world dynamic hierarchies, and highlight how recent RT methods can be adapted to effectively handle optimal cell ratios and stability.
منابع مشابه
Combining Extended Table Lens and Treemap Techniques for Visualizing Tabular Data
We present a framework for visualizing large tabular data that combines two views: the table view and the treemap view. The table view extends the known table lens as follows: We cluster related elements to reduce subsampling artifacts and achieve table size independent rendering time; we use multiple-column sorting to create scenariospecific data hierarchies on the fly; and we use shaded cushi...
متن کاملVisualizing Dynamic Hierarchies in TreeMaps
There has been a great amount of research on visualiz ing hierarchical data like directory structures, family trees etc. Several different tree visualization techniques have been presented in the literature. Among these, TreeMap [JS91] is one of the most promising and effective visualizations. However, not ev ery data set has a hierarchy in its nature. In such a case user can define imaginary h...
متن کاملFacilitating Visual Queries in the TreeMap Using Distortion Techniques
TreeMap is one a common space-filling visualization technique to display large hierarchies in a limited display space. In TreeMaps, highlighting techniques are widely used to depict search results from visual queries. To improve visualizing the queries results in the TreeMap, we designed a continuous animated multi-distortion algorithm based on fisheye and continuous zooming techniques. To eval...
متن کاملVisual Analysis of Hierarchical Management Data
The salesforce management data in Thomson Reuters is often having multiple hierarchies and dependencies. However, the conventional business graphics are not sufficient for presenting and exploring such data sets. The Treemap is proved to be effective for depicting hierarchical data, although it lacks the structural clarity such that distinguishing the different levels within the treemap is diff...
متن کاملTrees in a treemap: visualizing multiple hierarchies
This paper deals with the visual representation of a particular kind of structured data: trees where each node is associated with an object (leaf node) of a taxonomy. We introduce a new visualization technique that we call Trees In A Treemap. In this visualization edges can either be drawn as straight or orthogonal edges. We compare our technique with several known techniques. To demonstrate th...
متن کامل