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Entity-oriented spatial coding scheme and its application for spatial topology

Weining Zhu


Based on a newly proposed spatial data model – spatial chromatic model (SCM), we developed a spatial coding scheme, called full-coded ordinary arranged chromatic di-agram (full-OACD). As a type of spatial tessellation, full-OACD partitions a geographic space into a number of subspaces such as cells, edges, and vertexes. These subspaces are called spatial particles and assigned with unique codes – chromatic codes. The generation, structure, computation, and properties of full-OACD are introduced and relations between particulate chromatic codes and spatial topology are investigated. Full-OACD is a kind of new discrete spatial coordinate system where the information of real-world entities is em-bedded. Full-OACD provides an informative and meaningful spatial coding framework for spatial topological analysis and many other potential applications in geoinformation science.

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