| 摘要 |
PROBLEM TO BE SOLVED: To provide a displaying function which can refer to the structure of such task history that contains plural master tasks. SOLUTION: A layer decomposing means 3 checks such a task that contains plural master tasks from the task history information and task connection information respectively stored in a task history information storing means 1 and a task connection information storing means 2, sets new layers at every master tasks, and arranges only the tasks having parentage with the master tasks in the new layers. Each layer is tagged by means of a layer tag generating means 4 and a tree structure plotting means 5 makes plotting processing to display the parentage among the tasks in the form of tree structures at every layer. A layer tag switching means 6 switches the display of the layers by selecting tags and a three-dimensional task display plotting means 7 simultaneously plots plural layers from an arbitrary point of view. The parentage among the tasks thereby can be displayed in the form of tree structures at every layer. |
