A Characteristics-based Approach to Measuring Spatial Information Content of the Settlements in a Map

doi:10.13485/j.cnki.11-2089.2014.0154

Abstract

Abstract:

Transferring spatial information is a basic function of a map. Map information content is also a quantitative indicator to describe the complexity of spatial elements and their distributions, and can be used to evaluate the quality of map generalization. This paper studies on the hierarchical measurement of spatial information content of the settlements in a map from human spatial cognition. First, the nature of map spatial information content is investigated, and a general computational model is extended with the consideration of spatial characteristics. This proposed model is also used as a basic model to measure the content of map information. Second, the spatial characteristics of settlements in a map can be divided into three levels, i.e. the geometrical feature at element level, the adjacent distribution feature at neighborhood level and the clustering feature at global level, which are indeed consistent with the hierarchy of human spatial cognition. The spatial information content of the settlements is further classified in hierarchy. Sequentially, quantitative indicators are developed for the description of spatial features at each level, and the computational methods of spatial information content are proposed based on these quantitative indicators. Finally, a practical example is provided to illustrate the rationality and advantages of the proposed methods.

Key words: settlement, map information content, spatial characteristic, hierarchy, spatial cognition

CLC Number:

P208

LIU Huimin DENG Min FAN Zide LU Qidong. A Characteristics-based Approach to Measuring Spatial Information Content of the Settlements in a Map[J]. Acta Geodaetica et Cartographica Sinica, 2014, 43(10): 1092-1098.

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