Research on Calculating Direction Similarity Based on Grid Cone Directional Relation Model
In view of the shortcomings of expression ability and the application ability of multi-scale map data of the directional relation matrix in the quantitative calculation of the directional similarity relationship of spatial objects,a grid cone-shaped directional relation-ship model is proposed to quantitatively express the directional relationship of spatial objects.Through the experimental analysis of the expression ability of the grid cone-shaped directional relation model under the same scale,and the analysis of the application ability of the grid cone-shaped directional relation model under different scales,the analysis and comparison verify that the method in this paper is feasible,the spatial directional similarity measurement results are consistent with the human cognitive results,and can be applied to cartographic generalization,spatial data query and updating,and spatial data change detection and other tasks.
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