Eclipse Layout Kernel

The Eclipse Layout Kernel (ELK) is a collection of graph drawing algorithms that supports compound graph layout and ports as explicit anchor points of edges. Since its beginning, ELK has served both as a research vehicle for graph drawing algorithms, and as a practical tool for solving real-world problems. ELK and its transpiled JavaScript cousin elkjs are now included in numerous academic and commercial projects.

What does ELK do?

ELK is not a visualisation framework but a graph layout framework. This means that it computes coordinates for nodes and edges in a graph i.e. it tells you where to place these graph elements to draw a nice diagram.

Algorithms

ELK includes several graph layout algorithms. Most notably

• ELK Layered
• ELK Rectpacking
• ELK Mr. Tree

Example Layout