{"id":"ast_gKKaMR9mwWWfNLdhjrHA9","type":"choropleth","title":"Population of Japan's 47 prefectures, 2025","config":{"chart":{"bounds":[122.9,24,146.1,45.6],"domain":[500000,10000000],"format":{"kind":"number","compact":true,"decimals":1},"outline":{"width":0.6},"geography":"jp-regions"},"title":{"text":"Population of Japan's 47 prefectures, 2025"},"preset":"map-light","source":{"url":"https://www.stat.go.jp/english/data/kokusei/index.html","text":"Statistics Bureau of Japan, 2025 Population Census, preliminary counts (compiled table)"},"encoding":{"value":{"column":"population"},"region":{"column":"prefecture"}},"description":{"text":"Preliminary counts from the 2025 Population Census, as of 1 October 2025, by prefecture. Tokyo, Kanagawa and Osaka lead; Tottori and Shimane are the least populated."}},"columns":[{"id":"prefecture","type":"string","label":"Prefecture (ISO 3166-2 code or name)"},{"id":"population","type":"number","label":"Population, 1 October 2025 census (preliminary)"}],"rows":47,"data":"https://chartlink.app/a/ast_gKKaMR9mwWWfNLdhjrHA9.csv","remix":"To recreate this with your own data: POST https://chartlink.app/api/assets with this type and config, your own data in the same columns, then POST /assets/{id}/publish. Manual: https://chartlink.app/llms.txt. No key yet? POST https://chartlink.app/api/signup with {\"ref\":\"remix\"}."}