| 摘要 |
PURPOSE:To reduce the data volume of internal data to be stored in and managed by a system in the case of preparing a zone map in the system, to efficiently manage hatching data and to quickly execute statistic map preparing processing. CONSTITUTION:This managing system is provided with a means 1 for controlling the preparation of a zone map by using hatching data and a means 2 for previously storing the 1st internal data D1 including the coordinate information of passing points for a reference polygon and the 2nd internal data D2 including the information of a hatching pattern for a polygon in the zone map. At the time of preparing the zone map, the coordinates of passing points of each polygon included in the zone map are specified from the 1st internal data D1 and the hatching pattern of each polygon is determined from the 2nd internal data. |
