hjkwon0609/seoul-maps

Seoul administrative divisions in ESRI Shapefile, GeoJSON and TopoJSON formats.

Seoul Maps

This repo hosts Seoul administrative division geodata in open formats that can be used to build static and interactive maps (e.g. with D3).

To see maps for South Korea, go to https://github.com/southkorea/southkorea-maps

Description

Formats

The following formats are available: Shapefile, GeoJSON, and TopoJSON.

Sources

Data is acquired from the following sources:

• KOSTAT: Administrative division geodata for Census (센서스용 행정구역경계), 2013

Levels

Seoul administrative divisions are consisted of two levels:

• Municipalities (시군구): Si (시, city), Gun (군, county), Gu (구, district)
• Submunicipalities (읍면동): Eup (읍, town), Myeon (면, township), Dong (동, neighborhood), Ri (리, village)
• Precinct (선거구): TBA

Data

The following data are available.
Numbers are data sizes in Kilobytes in the following order: Municipalities, Submunicipalities.
Numbers in parentheses are simplified versions of each format.

Format \ Source	KOSTAT (2013)
Shapefile	396, 1528
GeoJSON	772, 3000 (44, 168)
TopoJSON	112, 412 (16, 96)

Development Notes

1. Download shapefiles from KOSTAT

2. Convert shapefiles to GeoJSON and TopoJSON

   ogr2ogr -f geojson [geojson_file] [shapefile_file] topojson -p -o [topojson_file] -- [geojson_file]

3. Simplify GeoJSON and TopoJSON using MapShaper

   • Municipalities: Visvalingam/weighted area, 5%
   • Submunicipalities: Visvalingam/weighted area, 1%

For details, see https://github.com/southkorea/southkorea-maps#kostat-2012

Examples

• 식신로드 만점식당 20선 (KOSTAT TopoJSON, 2013)
  

Copyright and License

Contributors

• Lucy Park (http://lucypark.kr)

License

• Apache v2.0