| 摘要 |
<p>PURPOSE:To display well-balanced tree structure by efficiently using a display space by arranging nodes by using weight provided for each node constituting the tree structure. CONSTITUTION:Based on an input command, a coordinate calculation part 10 calculates the coordinates of the node on a display screen based on the weight to be allocated corresponding to the kind of the node constituting the tree structure, and a node control table 11 holds the coordinate information of the node calculated by the coordinate calculation part 10. A graphic library 12 holds the shape of a graphic expressing parental relation between the nodes. Based on the coordinates of the node calculated by the coordinate calculation part 10, a drawing part 13 draws the graphic expressing the node on the display screen. Thus, the well-balanced tree structure can be displayed by efficiently using the display space.</p> |
