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    OpenStreetMap 台灣圖資的歷史回顧 - 尤孝庭 === {%hackmd LcL4-VI0SGitSiINTuy4rA %} * [投影片連結](https://hackmd.io/@littlebtc/osmtw-history-coscup2019#/) > 講者: > 究心公益科技網站開發人員 > 地圖愛好者 > OSM 社群成員/圖客 > 從歐洲實施GDPR開始,必須用OSM帳號登入才能下載含history的OSM data 一開始是拿Bing map來描,否則就只能自己用GPS軌跡去畫(很麻煩又很慢),從2014年開始才有比較多圖資來源(如國圖中心開放低解析度的衛星圖資) 從2013年開始,台灣OSM社群有越來越多人投入 Q:OSM有沒有人用空拍機去拍照,再用程式批次處理,有的話效果如何? A:有,效果還不錯,但因為有些限制,建議還是用商業方案比較實在 Q:跟政府的關係? A:算跟國圖中心是競爭關係,因為OSM是免費的,但國圖的要錢,不過OSM有在用國圖釋出的低解析度圖資 * 展示十年前與十年後的OSM成果 * 曾經有想過要用OSM History Render * 因為這已不維護而改用其他方法 * 分享內容不包含個資 * 從2010開始,用每年1/1的早上8點開始做區分 * 投影片的下午四點(16:00)是錯的 * 2013/2014間,OSM圖資的大幅成長 * 目前彰化雲林還是OSM~~沙漠~~弱勢區 ### 成果 #### Node Density https://i.imgur.com/pqseK4u.mp4 #### Taiwan map https://i.imgur.com/0K94wOM.mp4 #### 六都與楊梅的地圖 https://imgur.com/a/5NicuaB - 台北:重劃區的出現 - 台南:了不起的複雜埤塘被畫出來了! - 桃園:重劃區慢慢成型 - 楊梅:長期缺乏衛星圖資 - 一開始只有Bing Map - 2016年起相容授權的圖資變多才有發展 ## QA 問: 哪些地方難畫 答: 橋下面的道路、隧道、山路,可以用 GPS 軌跡或國土中心資料協助 問:有考慮用無人機畫圖 答:因為 40 m 高度限制,建議用在偏遠地區。另外 open droid map 的 open source 方案仍有問題,建議先用商業方案 問:跟政府的關係? 答:邊競爭邊合作。國土中心釋出低解析度圖資,開放授權部分算合作。 ###### tags: `COSCUP2019` `OpenStreetMap x Wikidata` `IB503`

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