A new road network selection approach based on the importance criteria of spatial interactive relationship

After introducing the past research achievements in the field of automatic selection of road network, the advantages and shortcomings of how to select the road network were underlined, then a new road selection algorithm to fetch up the shortcomings was put forward. First, the assessment criteria of the importance of road network were summarized and classified on the basis of constraints in road network generalization selection. Second, the importance assessment criteria of road network were achieved by the spatial interactive relationship of road network which was analyzed with buffer analysis and cluster analysis algorithms. The enhanced road network importance criteria fetched up the lack of attribute information in data structure of road network, which was pivotal to road selection. Finally, examples were illustrated the advancement and scientificity of this new approach termed in this paper.