| 摘要 |
PURPOSE:To semiautomatically edit and form a network graphic by a simple mechanism by providing a memory with position information of a node, position information of the starting/finishing points of an arc and identificatifier specifying a node to which the arc is in control with its starting/finishing points. CONSTITUTION:The coordinate of each node to which unique identificatifier is fitted is stored in a node table and on the other hand, the coordinates of the starting/finishing points of each arc to which unique identificatifier is fitted and identificatifier of the node to which the arc is in contact with the coordinates of the staring/finishing points are stored in an arc table. Then, when the deletion of a node C is specified, arcs (q) and (r) are automatically deleted with the deletion of the node C. Besides, when the moving of the node C is specified, the starting point of the related arc (q) and the finishing point of the related arc (r) are automatically changed (parallel movement). |
