| 摘要 |
PURPOSE:To enable the division in a short time by reading the polygonal point from the reduced chart or the like of the irregular land as the coordinate point of the prescribed coordinate, preserving the coordinate point of the rectangle means, and outputting observation data or the like based on the coordinate point. CONSTITUTION:The coordinate point of a rectanble 10 being the widest area in a polygonal area 1 is obtained. The one having the widest area and more than the specified area is selected for the rectangle 10. Then, a rectangle 20 being the next widest area is obtained by taking the area except the area of the rectangle 10 in the polygonal area 1. The one with the widest area and more than the specified area is selected for the rectangle 20. Further, a rectangle 30 being the next widest area is obtained by taking the area except the area of the rectangles 10 and 20 in the polygonal area 1 as an object. The one with the widest area and more than the specific area is selected for the rectangle 30. Thus, the chart is completed with no rectangle wider than the specifed area. |
