Tizian 「ティツィアーン」
5a5b2feead
A map question is a multiple-choice card drawn on a map: the composer's Map kind takes the region tapped as its answer, and studying it means tapping a region and checking, the right one green and a wrong pick red, each named. The map of Japan's 47 prefectures comes from Natural Earth (public domain), built by tool/maps/japan_prefectures.py from release v5.1.2 (its download checked by hash): simplified, small islands dropped, rounded; about 107 KB. Maps are drawn to fit, tappable and zoomable for small regions. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com> Signed-off-by: Tizian 「ティツィアーン」 <raisondetredev@pm.me>
909 B
Map data
japan_prefectures.geojson derives from Natural Earth
(https://www.naturalearthdata.com/), Admin 1 – States, Provinces, 1:10m
cultural vectors, release v5.1.2. Natural Earth's map data is in the public
domain:
All versions of Natural Earth raster and vector map data found on this website are in the public domain. You may use the maps in any manner, including modifying the content and design, electronic dissemination, and offset printing.
tool/maps/japan_prefectures.py builds the file: it keeps Japan's 47
prefectures, simplifies their outlines (Douglas–Peucker, 0.006°), drops islands
too small to see (each prefecture keeps its largest), and rounds coordinates to
4 decimals. The outlines are an approximation for display, not survey-accurate
data. Regions are named by their ISO 3166-2 codes (JP-01 … JP-47), with
Natural Earth's English and Japanese names.