GEOGRAPHIC INFORMATION ABSTRACTIONS - CONCEPTUAL CLARITY FOR GEOGRAPHIC MODELING

被引：16

作者：

NYERGES, TL

机构：

来源：

ENVIRONMENT AND PLANNING A | 1991年 / 23卷 / 10期

关键词：

D O I：

10.1068/a231483

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

Just as we abstract our reality to make life intellectually manageable, we must create abstractions when we build models of geographic structure and process. Geographic information abstractions with aspects of theme, time, and space can be used to provide a comprehensive description of geographic reality in a geographic information system (GIS). In the context of geographic modeling a geographic information abstraction is defined as a simultaneous focus on important characteristics of geographic content, structure, and process while temporarily suppressing certain details. Geographic information abstractions can be used in a database design process to develop a more realistic description of reality in the form of a database model. The geographic information abstraction types are: classification, generalization, aggregation, and association. They are used to structure a descriptive GIS database model by using an example from urban transportation. -from Author

引用

页码：1483 / 1499

页数：17

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