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Estimation of the Map Projection of Daedongyeojido(‘The Great Map of Korea’) Based on GIS Analysis

  • Journal of the Korean Cartographic Association
  • Abbr : JKCA
  • 2017, 17(2), pp.11-27
  • Publisher : The Korean Cartographic Association
  • Research Area : Social Science > Geography > Geography in general > Cartography
  • Published : August 31, 2017

Cho, Daeheon 1 LEE, SANG-IL 2

1가톨릭관동대학교
2서울대학교

Accredited

ABSTRACT

Despite many studies on the cartographic characteristics of Daedongyeojido, there has been little systematic research focusing on the map projection. This study aims at estimating the map projection of Daedongyeojido and examining its characteristics through a GIS-based analysis. First of all, practical procedures for estimating map projections of old maps and related GIS-based analysis methods are established. The best fit projection is chosen after the process that the control points in the reference map based on each candidate projection are converted to the old map using geometric transformations and the location similarity and the shape similarity is measured, is repeated for all candidate projections. These procedures were applied to 13 candidate projections of various types with varying projection parameters (central meridian and standard parallels) to estimate the projection of Daedongyeojido. As a result, it was revealed that the conformal conic projection and the conformal cylindrical projection was the best fit. However, the distribution of errors showed spatial heterogeneity that both the positional error and the shape error increased toward the north. So, additional analyses were performed assuming that the projections with better fit would be different between the southern and northern regions. It turned out that the best fit one was cylindrical equal area projection in the north, but the equidistant conic projection and the conformal conic projection showed the highest fitness in the south. It is meaningful that this study contributes to expanding the study of old maps based on the GIS analysis, but further research is needed to improve methods for measuring fitness of map projections and to analyze using verified control points.

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