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Example of a radial tree, from a 1924 organization chart that emphasizes a central authority [1] A radial tree, or radial map, is a method of displaying a tree structure (e.g., a tree data structure) in a way that expands outwards, radially. It is one of many ways to visually display a tree, [2] [3] with examples dating back to the early 20th ...
Hypermedia exploration with interactive dynamic maps Paper by Zizi and Beaudouin-Lafon introducing the squarified treemap layout algorithm (named "improved treemap layout" at the time). Indiana University description; Live interactive treemap based on crowd-sourced discounted deals from Flytail Group; Treemap sample in English from The Hive Group
Representations might also be more complicated, for example using indexes or ancestor lists for performance. Trees as used in computing are similar to but can be different from mathematical constructs of trees in graph theory , trees in set theory , and trees in descriptive set theory .
The nested set model is a technique for representing nested set collections (also known as trees or hierarchies) in relational databases.. It is based on Nested Intervals, that "are immune to hierarchy reorganization problem, and allow answering ancestor path hierarchical queries algorithmically — without accessing the stored hierarchy relation".
Lite for .NET [4] is a free charting component for the Microsoft Visual Studio .NET community and TeeChart for PHP [5] is an open-source library for PHP environments. The TeeChart Charting Library offers charts , maps and gauges [ 6 ] in versions for Delphi VCL / FMX , ActiveX , C# for Microsoft Visual Studio .NET , Java and PHP .
Example of a Structured Chart. [1] A structure chart (SC) in software engineering and organizational theory is a chart which shows the smallest of a system to its lowest manageable levels. [2] They are used in structured programming to arrange program modules into a tree. Each module is represented by a box, which contains the module's name.
Gizmo's Freeware directory featured WinDirStat in a January 2010 list of best free disk analysis software with a 4 of 5 stars review, noting: "The open source program WinDirStat is [an] outstanding program. It uses three ways to display the disk usage: a directory list, a file extension list and a rectangular treemap.
Tree structures can depict all kinds of taxonomic knowledge, such as family trees, the biological evolutionary tree, the evolutionary tree of a language family, the grammatical structure of a language (a key example being S → NP VP, meaning a sentence is a noun phrase and a verb phrase, with each in turn having other components which have ...