Surveying and Mapping Geographical Information from the Perspective of Geography

doi:10.11947/j.AGCS.2017.20170338

Abstract

Abstract: It briefly reviewed the history of geographic information content development since the existence of geographic information system. It pointed out that the current definition of geographic information is always the extension from the "spatial+ attributes" basic mapping framework of geographic information. It is increasingly difficult to adapt to the analysis and application of spatial-temporal big data. From the perspective of geography research subject and content, it summarized systematically that the content and extension of the "geographic information" that geography needs. It put forward that a six-element expression model of geographic information, including spatial location, semantic description, attribute characteristics, geometric form, evolution process, and objects relationship.Under the guidance of the laws of geography, for geographical phenomenon of spatial distribution, temporal pattern and evolution process, the interaction mechanism of the integrated expression, system analysis and efficient management, it designed that a unified GIS data model which is expressed by six basic elements, a new GIS data structure driven by geographical rules and interaction, and key technologies of unstructured spatio-temporal data organization and storage. It provided that a theoretical basis and technical support for the shift from the surveying and mapping geographic information to the scientific geographic information, and it can help improving the organization, management, analysis and expression ability of the GIS of the geographical laws such as geographical pattern, evolution process, and interaction between elements.

Key words: geographic information, six-element expression model, data model, data structure, database

CLC Number:

P208

LÜ Guonian, YUAN Linwang, YU Zhaoyuan. Surveying and Mapping Geographical Information from the Perspective of Geography[J]. Acta Geodaetica et Cartographica Sinica, 2017, 46(10): 1549-1556.

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