인구이동 플로의 지리적 시각화를 위한 개념적 명료화: 우리나라 2020년 인구이동에 대한 주제도 제작

Abstract

The main objective of this study is to provide conceptual clarifications on geovisualization for migration flow and to exemplify them with various thematic maps for internal migration data of South Korea. A spatial framework for migration studies is offered based on an in-depth discussion on the spatial scale concept. Various migration measures are properly placed on a typology table on which one dimension is about their characteristics and the other is about their spatial scales. A proper way to combine various measures and the three major types of thematic mapping, proportional symbol, choropleth, and flow maps, is examined. Thematic maps for the internal migration flow data in South Korea in 2020 are offered at three different regional scales: a kind of bivariate proportional symbol map for net migrants and net migration rates and a choropleth map for migration effectiveness at the general regional scale; a couple of proportional symbol maps and a couple of choropleth maps for row-standardization and column-standardization proportions at the region-specific level; and a couple of flow maps for stream effectiveness and dominant flows at the inter-regional scale. This study is expected to foster exploratory spatial data analysis for migration flow data beyond simple data visualization.