Radial tree

Example of a radial tree, from a 1924 organization chart that emphasizes a central authority

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, with examples dating back to the early 20th century. In use, it is a type of information graphic.

Radial vs. triangular tree layout