A Dataset for Multiple Structural Representations of Urban Road Maps Across Chinese Cities

This dataset comprises simplified urban road networks data in spatial representation from 293 prefecture-level cities and 4 provincial-level municipalities in china. The data record encompasses the road network and the geometric details of crossings, stored in Shapefile format. These datasets are readily applicable for spatial analysis in GIS software such as ArcGIS. urban road networks in spatial representation is also made available in NetworkX format to support the application of interdisciplinary methodologies such as complex networks in urban studies.<b>s</b><b>egment</b><b>-b</b><b>ased </b><b>pri</b><b>mal </b><b>graph</b>• Road segments (Shapefile): Geometric information of road segments for each city• Junctions (Shapefile): Geometric information of road segment intersections for each city• Primal graph (Graphml): Nodes represent junctions, and edges represent road segments<b>s</b><b>egment</b><b>-base</b><b>d dua</b><b>l graph</b>Dual graph (Graphml): Nodes represent road segments, and edges represent connection relationships<b>str</b><b>oke</b><b>-bas</b><b>ed dua</b><b>l graph</b>• Stroke (Shapefile): Stroke units generated from road segments for each city• Stroke-based dual graph (Graphml): Nodes represent strokes, and edges represent connection relationships<b>co</b><b>mbin</b><b>ed </b><b>dual g</b><b>raph</b>• Strokes and named streets (Shapefile): Named streets are constructed from road segments with names, while strokes are composed of road segments without names• Integrated dual graph (Graphml): Nodes represent strokes or named streets, and edges represent connection relationships