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Geo-spatial Analysis of the Seoul Subway Station Areas Using the Haversine Distance and the Azimuth Angle Formulas

다트판형 공간분할 기법을 이용한 서울지역 지하철 역세권 분석

  • Received : 2018.01.17
  • Accepted : 2018.10.08
  • Published : 2018.12.31

Abstract

This paper investigated the human distribution in subway station areas in Seoul, using geotweets and subway ridership data. Eight stations were selected from the districts of Gangnam and Gangbuk. Geotweets located within a 600-meter radius of the central coordinates of each station were extracted, and distances between the center of station and each tweet location were calculated. Donut-shaped dimension and pie-shaped dimension were generated, using the Haversine distance formula and the Azimuth angle formula respectively. By combining the two dimensions, Dartboard-shaped space division is created. Popular places within the subway station areas identified from this research are almost the same as the current well-known popular places, and this is an important case showing that people send tweets from various places where they engage in daily activities. We expect this study can be a methodological guideline for social scientists who use spatio-temporal or GPS data for their research.

Keywords

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Dartboard-shaped Space Division based on Donut-shaped and Pie-shaped Dimensions

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Dimensional Model for the Geo-spatial Analysis of Subway Station Area

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Eight Subway Station Areas in Seoul Created by Pie Dimension

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Four Station Areas in Gangbuk Region

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Popular Places in Gangbuk Region found by Dartboard Dimension

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Four Station Areas of Gangnam Region

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Popular Places in Gangnam Region found by Dartboard Dimension

Geotweet Population by Quadrant

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Geotweet Counts by Quadrant

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Average Distance by Quadrant

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Area Size of Subway Station Area

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