A stroke-based method for automated generation of schematic network maps

Zhilin Li · Weihua Dong

29 citations0/0 files storedInternational Journal of Geographical Information Systems

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Geographic Information Systems Studies Data Visualization and Analytics Urban Design and Spatial Analysis

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. The procedure is as follows: (a) strokes are formed from line segments, (b) the strokes are re-orientated along grid lines and/or diagonals, and (c) two endpoints and all intersection points on (sub-)strokes are projected onto re-oriented straight lines, and (d) spatial inconsistency is detected and resolved. A methodology for each of these steps is described. This new method has been tested with a set of real-life road network data and evaluated by fractal analysis and empirical study. Experimental results show that this new method is more effective than segment-based methods and is able to produce graphics with great simplicity and clarity. Based on the results obtained, the stroke-based schematization with four primary directions is recommended.

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References

2007Generalisation of Geographic Information: Cartographic Modelling and Applications 2006Algorithmic Foundation of Multi-Scale Spatial Representation 2009Selective omission of road features based on mesh density for automatic map generalization 1997Cognitive requirements on making and interpreting maps 2006Automated Production of Schematic Maps for Mobile Applications 2007Characterising Space via Pattern Recognition Techniques

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2015General Principles for Automated Generation of Schematic Network Maps 2014Generalisation in the Context of Schematised Maps 2020Automated labeling of schematic maps by optimization with knowledge acquired from existing maps 2023Influencing Pedestrians’ Route Choice Using Route Shape Simplification 2023Revealing Schematic Map Designs with Preservation of Relativity in Node Position and Segment Length in Existing Official Maps 2014General Principles for Automated Generation of Schematic Network Maps

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