Abstract: This article deals with the graphic simplification of a network by schematization. A new method employing a stroke-based and progressive strategy is proposed to generate schematic network maps. This method treats a stroke (which is a long line with segments concatenated together) as a basic unit for the implementation. 继续阅读“A stroke-based method for automated generation of schematic network maps”
Abstract: A metro map is usually optimized for the readability of connections and transportation networks structure. In order to assure good readability and meet aesthetic considerations, a set of principles for good metro map layout are proposed. According to these principles, a new methodology based on dynamic segmentation is presented to produce the metro maps automatically. Firstly, routes are constructed according to the line attribute similarity and geometry continuity. Then a set of cartographic generalization methods about the shape, angle, length, and topology are presented for these routes. This method is validated by Beijing metro plan map. From the experiment results, it can be concluded that this new method is more effective than the static segmentation method to produce metro maps with better readability for route plans. 继续阅读“Automatic generalization of metro maps based on dynamic segmentation”
Abstract: Multiple constraints for schematic road network map cartographic design are analyzed and summarized. Based on this, a set of quantitative criteria are set up and a new road network generalization method including progressive selection and displacement is proposed. Furthermore, topological checking methods for road networks are researched. Based on these constraints, the points in a road network are classified, and a satisfactory and effective schematic map is designed in a concrete experiment while maintaining topological consistency of the road network between the original and the schematic map.