| 摘要 |
PURPOSE:To realize an editing operation of a high level, and also, to realize an easily visible graph display by providing a graph logical structure storage part, a graph relevancy retrieving part, a graph projecting part, etc. CONSTITUTION:The titled device is provided with a command control part 22, a graph logical structure storage part 24 for storing a logical structure of a graph constituted of plural nodes and edges, a graph relevancy retrieving part 23 for retrieving the relevancy of the node and the edge from the graph logical structure, and a graph plane projecting information storage part 26 for storing the arrangement information of the projected graph on the plane. Also, this device is provided with a graph projecting part 25 for projecting the graph corresponding to the graph logical structure onto the plane and storing it in the graph plane projecting information storage art 26, and a graph display part 27 for displaying the graph stored in the graph logical structure storage part 24 based on the information stored in the graph plane projecting information storage part 26. In such a way, a change on a display can be executed easily in accordance with a change on the logical structure of the graph. |
