A New Method of Constructing a Central Time-space Map

doi:10.11947/j.AGCS.2018.20170180

Abstract

Abstract: A central time-space map is an effective method for representing time distance from any positions to a given point on a map.We proposed a new method of generating a central time-space map based on moving least squares(MLS).Compared with other methods,our method solved the following 3 problems:①the law of consistency of distance was used to keep the same scale of a time-space map and its original map;②we used some constraints to adjust topological errors generated by the process of transformation;③many visualization methods were used to represent a time-space map's distortion.Finally,we took real trains' timetable data in China in 2016 as a case study to generate a time-space map with Beijing as the center.The results showed that the time distance relationship between Beijing and other cities from a different perspective and were also helpful for further discovering some knowledge and trends of the development of railway transportation in China.

Key words: time-distance visualization, time-space map, moving least squares(MLS), spatial distortion

CLC Number:

P208

WANG Lina, LI Xiang, JIANG Nan, YANG Zhenkai, YANG Fei. A New Method of Constructing a Central Time-space Map[J]. Acta Geodaetica et Cartographica Sinica, 2018, 47(1): 123-132.

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