Survey on Graph-Hierarchy Visualization Techniques

Abstract — A graph is now widely used in many real time applications. These applications require displaying graphs using computers. Small graphs can be easily displayed on screen. But graphs with much number of nodes and connecting edges are difficult to display. These graphs when arranged in a hierarchical structure are called as Tree. Visualization of this graph hierarchy is an important issue. This paper presents information about visualizing graphs using computers and a survey on graph hierarchy visualization technique. Two techniques are explained; Node-Link technique and Space-Filling technique.