METHOD FOR DERIVING OPTIMUM AREA USING DIGITAL MAP

摘要

A method for deriving an optimum area suitable for a predetermined purpose by using a digital map is provided to increase the usability of the digital map and a GIS(Geographic Information System) by easily deriving the optimum area suitable for the specific purpose based on various layers/attribute information of the digital map. An object layer/evaluation rule setting part sets up more than two object layers and evaluation rules stored in a digital map database to derive the optimum area suitable for the predetermined purpose among a plurality of polygons included in the digital map(S22). A layer generator generates an overlapped layer overlapping the object layers. An attribute table generator generates a combination attribute table corresponding to the overlapped layer by combining an attribute table of the object layers stored in the digital map database(S23). A suitability calculator calculates suitability of each polygon of the overlapped layer from the combination attribute table according to the evaluation rules(S24). A digital map/optimum area map generator generates at least one of the digital map and an optimum area map reflecting the suitability(S25).