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《Journal of Geo-Information Science》 2009-05
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A Conceptual Framework of Spatial Data Multi-scaling Representation and Processing in GIS

LI Aiqin1,LI Deren2,GONG Jianya2,DENG Yi3(1.Zhejiang Academy of Surveying & Mapping,Hangzhou 310012,China;2.State Key Lab.of Information Engineering in Surveying,Mapping and Remote Sensing,Wuhan University,Wuhan 430079,China;3.Geomatics Center of Zhejiang,Hangzhou 310012,China)  
Conceptual framework is one of the most important research topics of map generalization,but at the same time it has been too much ignored.There are both relationship and difference between spatial data multi-scaling representation and processing in GIS and map generalization.The multi-scale representation and processing is mainly driven by the objectives of geographic information analysis and querying,while map generalization emphasizes more on the cartographic representation,driven by the objective of information transmission and communication.This paper makes an attempt to study and look for a simple knowledge representation method and processing framework,so as to set up a scale-independent spatial database,or so called multi-scaling GIS,which has provided the theoretical foundation and practical experience for the efficient organization and management of spatial database as well as the research and development for multi-scale representation and processing.It proposes that "information selection" is the core not only for spatial data representation,processing and organization but also for map generalization;makes analysis on the difference and relationship between geographic spatial databases and map databases;emphasizes that geographic spatial databases are the abstract representation of features in the digital landscape model,but not just the display of graphics;makes analysis on the requirements of multi-scale representation and processing to spatial database;emphasizes that feature elements should be represented integrally and seamlessly;meanwhile,proposes that attention should be paid to the significance of various thematic spatial partitions and logically thematic spatial information in multi-scale representation and processing;and proposes multi-grade modeling representation rules based on thematic models in different subject realm as well as knowledge representation framework of multi-scale representation and processing based on spatial feature classification structure and parameter table.This paper aims at GIS analysis purpose.Based on analysis of lots of literature,a number of issues about spatial scale,multi-scaling,manual map generalization,digital map generalization,geographic database,cartographic database and conceptual frameworks are discussed.This paper proposes and tests a simple conceptual framework for spatial data multi-scaling representation and processing in GIS.
【Fund】: 浙江省地理空间数据交换平台项目(浙发改高技[2008]353号)
【CateGory Index】: P208
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