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2002 Fiscal Year Final Research Report Summary

DEVELOPMENT AND APPLICATION OF SPATIOTEMPORAL ANALYSIS METHODS IN SPATIAL INFORMATION SCIENCE

Research Project

Project/Area Number 13680508
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeSingle-year Grants
Section一般
Research Field 社会システム工学
Research InstitutionTHE UNIVERSITY OF TOKYO

Principal Investigator

SADAHIRO Yukio  ASSOCIATE PROFFESSOR, DEPARTMENT OF URBAN ENGINEERING, 大学院・工学系研究科, 助教授 (10240722)

Co-Investigator(Kenkyū-buntansha) OKUNUKI Keiichi  ASSOCIATE PROFFESSOR, DEPARTMENT OF GEOGRAPHY, NAGOYA UNIVERSITY, 大学院・環境学研究科, 助教授 (90272369)
Project Period (FY) 2001 – 2002
KeywordsSpatiotemporal data / Spatiotemporal analysis / Point data / Line data / Polygon data / Surface data
Research Abstract

This study developed a set of methods for analyzing spatial objects in the spatiotemporal domain that cannot be fully analyzed by existing spatial or temporal methods. This study chose four types of spatial objects frequently used in representing spatial phenomena: l) points, 2) lines, 3) polygons, and 4) surfaces. Along method development empirical applications were also done in parallel.
Analysis of points is based on analysis of their corresponding surface: points are converted into a surface by spatial smoothing and analyzed by a surface analysis method which uses peaks, pits, and cols. This method can detect both local and global patterns in point distributions and works more efficiently if it is linked to graphical analysis in GIS.
In analysis of lines links are used as primitive elements to describe change over time. Each link is quantitatively evaluated in terms of temporal change, which leads to evaluation of the whole change of a network. This method is appropriate especially for analysis of discrete change of lines such as change of road networks.
As well as lines, polygons are analyzed by the primitive decomposition approach- change of a polygon distribution is decomposed into a set of changes of individual polygons. Application of this method to market area analysis of convenience stores yielded some useful empirical findings which demonstrated the validity of the method.
Analysis of surfaces is based on spatiotemporal tessellations naturally defined from two types of spatiotemporal singularities. This method gives us two different viewpoints on a common spatiotemporal phenomenon, which shows one possible way of combining spatial and temporal analyzes that have been studied separately in different fields.

  • Research Products

    (12 results)

All Other

All Publications (12 results)

  • [Publications] SADAHIRO, Yukio: "A graphical method for exploring spatiotemporal point distributions"Cartography and Geographic Information Science. 29. 67-84 (2002)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] SADAHIRO, Yukio: "Exploratory Method for Analyzing Changes in Polygon Distributions"Environment and Planning B. 28. 595-609 (2001)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 安井謙介, 貞広幸雄: "ネットワークの時空間分析手法-京都の道路ネットワークを事例として-"地理情報システム学会平成13年度研究発表大会梗概集. 10. 163-166 (2001)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] SADAHIRO, Yukio: "Spatio-temporal analysis of surface changes by tessellations"Geographical Analysis. 33. 312-329 (2001)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] SADAHIRO, Yukio, UMEMURA Mitsuru: "A Computational Approach for the Analysis of Changes in Polygon Distributions"Journal of Geographical Systems. 3. 137-154 (2001)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] SADAHIRO, Yukio: "Analysis of Surface Changes Using Primitive Events"International Journal of Geographical Information Science. 15. 523-538 (2001)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] SADAHIRO, Yukio: "A graphical method for exploring spatiotemporal point distributions"Cartography and Geographic Information Science. 29. 67-84 (2002)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] SADAHIRO, Yukio: "Exploratory Method for Analyzing Changes in Polygon Distributions"Environment and Planning B 28. 28. 595-609 (2001)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] YASUI, Kensuke and Yukio SADAHIRO: "Spatiotemporal Analysis of Networks"Papers and Proceedings of Geographic Information Systems Association. 10. 163-166 (2001)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] SADAHIRO, Yukio: "Spatio-temporal analysis of surface changes by tessellations"Geographical Analysis. 33. 312-329 (2001)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] SADAHIRO, Yukio and Mitsuru UMEMURA: "A Computational Approach for the Analysis of Changes in Polygon Distributions"Journal of Geographical Systems. 3. 137-154 (2001)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] SADAHIRO, Yukio: "Analysis of Surface Changes Using Primitive Events"International Journal of Geographical Information Science. 15. 523-538 (2001)

    • Description
      「研究成果報告書概要(欧文)」より

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Published: 2004-04-14  

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