Coupled Geographical-Cartographic Attribute Encoding Model
地理属性和图形属性耦合的信息编码模型

Spatial information encoding which presents the interface between the real and information entities, is one of the most important steps in designing GIS. Most GIS and mapping systems almost adopt the ways of encoding for geographical attributes, which are more effective for spatial analyses but weaker in mapping. Referring to the other coding methods such as AutoCad and MapCad, the authors raised the concepts of geographical entity encoding model(GEEM) and cartographic entity encoding model (CEEM), and compared their advantages and disadvantages in mapping. A new model, coupled geographical-cartographic attributes encoding model (CGCEM), has been proposed based on the two models mentioned above.