# 地域創生ドットコム 都道府県セレクター / Japan prefecture selector

Map data © Lincun; Geolonia and contributors.

Source: https://github.com/geolonia/japanese-prefectures
Original SVG: https://raw.githubusercontent.com/geolonia/japanese-prefectures/master/map-mobile.svg
Underlying work: https://commons.wikimedia.org/wiki/File:Japan_Map_Lincun.svg
Retrieved: 2026-09-15

The upstream README declares **GFDL**, not MIT. The underlying Lincun map specifies GNU Free Documentation License 1.2 or any later version, with no Invariant Sections, no Front-Cover Texts, and no Back-Cover Texts. This distribution uses GFDL 1.3; a complete copy is included in GFDL-1.3.txt. Permission is granted to copy, distribute and/or modify the map under those terms.

## Modification history

- Original: Japan Map Lincun.svg by Lincun (2007), based on MLIT National Land Numerical Information, as recorded on the original file page.
- Upstream: Geolonia groups prefectures and arranges a compact/mobile map. Upstream README and original SVG are preserved alongside this notice.
- 2026-09-15, 地域創生ドットコム: extracted original polygon/path coordinates and transforms into a small JSON file, sorted by prefecture code, and applied site colours, names, counts and accessible keyboard controls. The geographic path geometry has not been invented or simplified further. Map-derived data and modifications remain available under GFDL 1.3.

The complete editable source for the displayed geometry is japan-prefectures.json. Original source is geolonia-map-mobile.svg. Download these together with this notice, UPSTREAM-README.md and GFDL-1.3.txt when redistributing. App-specific React controls and data counts are separate from the licensed map artwork.

Okinawa is inset. Some remote islands are omitted by the upstream compact map. The map shows prefecture areas for navigation, not case/facility coordinates. No endorsement by the original creators is implied.