ELECTRONIC MAP HIERARCHICAL MANAGEMENT METHOD

摘要

Disclosed is an electronic map hierarchical management method, the method comprising: establishing an electronic map hierarchical model; determining the plane conversion relationship between a map photo and a ground coordinate in a basic map layer, and the relationship between screen offset and proportion; if the screen is scaled or translated, respectively searching and displaying a new map photo. The present invention employs a fuzzy hierarchical management algorithm to facilitate partial modification and changing of a map without any special maintenance management tool, thus being suitable for a small-scale electronic map; when only a portion of a certain map layer needs to be displayed, only said portion rather than a complete picture is saved, thus greatly reducing the map creation and maintenance workload.