GRAPHICS IMAGE GENERATING DEVICE, AND ITS METHOD AND PROGRAM

摘要

PROBLEM TO BE SOLVED: To display the hierarchical structure of graph data and the connection relation between nodes so that the both can easily be grasped at the same time through the graphics display of the hierarchical graph data. SOLUTION: Graphics images of the hierarchical graph data to be processed are generated one after another from higher layer. When a subgraph as a graphics image of a specific layer is generated and a subgraph of a lower layer for a specific node of the subgraph is generated, the size of the node whose low-layer subgraph is generated is so varied to include the subgraph of the low layer and another node nearby the size-varied node is moved without interfering with the subgraph of the low layer.