Y.FURUKAWA
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    --- title: Code for Japan summit 2019 BadData tags: presentation slideOptions: transition: slide --- ## これからの ## 怖い地図データの話をしよう #### Code for Japan Summit 2019 ##### Badオープンデータ供養寺 ###### 古川泰人 ###### OSGeoJP/MIERUNE/etc ###### (協力 喜多耕一さん/北海道庁) --- ## 2018はこんな話。2019は… https://www.slideshare.net/yasutofurukawa/gis-117470447 --- # 地籍XML! #### a.k.a 登記所備付地図 ![](https://i.imgur.com/2ZjBuOI.png) --- ### こんなデータ ``` ※地番参考図…公開・共有できると組織内外で結構使いみちがある ``` ![](https://i.imgur.com/nOsrDGq.png =600x) http://www2.city.takarazuka.hyogo.jp/chibanzu/nanbu/pdf/b244.pdf --- ### 喜多さんからの問題提起 ![](https://i.imgur.com/Y4a3eFQ.png) (コメント90件以上て…) ![](https://i.imgur.com/JLyslaC.gif) https://www.facebook.com/groups/1270223339681777/permalink/2378454362191997/ --- ### あきらかになったこと1 - <span>変換できるツールがとても少ない<!-- .element: class="fragment" data-fragment-index="1" --></span> - <span>変換できても任意座標で謎の場所に落ちる<!-- .element: class="fragment" data-fragment-index="2" --></span> - <span>宇宙の果て地番は紙地図を見て手修正<!-- .element: class="fragment" data-fragment-index="3" --></span> - <span>文字化けが酷い(登記外字は平本さんヨロ)<!-- .element: class="fragment" data-fragment-index="4" --></span> --- ### あきらかになったこと2 - <span>変換されても空間データ構造的に色々アレ<!-- .element: class="fragment" data-fragment-index="1" --></span> - <span>修正作業担当者が苦しんで泣き寝入り<!-- .element: class="fragment" data-fragment-index="2" --></span> - <span>紙図面でええやんというあきらめ<!-- .element: class="fragment" data-fragment-index="3" --></span> - <span>毎年変換や図化にけっこうなお金が出ている<!-- .element: class="fragment" data-fragment-index="4" --></span> --- ## 毎年変換や図化にすごいお金が出ている(ようだ) --- ## コスト ### 業界関係者談 「ん〜とりま変換調査は50万〜だね」(n=3) <span>邪推:50万 X 500市町村 = 2億5千万円て<!-- .element: class="fragment" data-fragment-index="4" --></span> --- ### 対策 --- 任意座標は手で平行移動…? https://www.pasco.co.jp/articl170209/articl170209.pdf --- 高精度情報が必要なら地積調査票から読み取る…? http://www.chiseki.go.jp/about/manga/index.html --- ## <span> てか、デジタルはどこに?<!-- .element: class="fragment" data-fragment-index="3" --></span> --- [議論のラウンドテーブルに載せて!](https://www.google.com/search?q=%E7%94%B0%E4%B8%AD%E6%AD%A3%E9%80%A0+%E7%9B%B4%E8%A8%B4&sxsrf=ACYBGNTIG_qtBTBkcAwpLzPW9WDUJcIH9Q:1569808217440&source=lnms&tbm=isch&sa=X&ved=0ahUKEwiZ0Kmpt_fkAhWKBKYKHdbUCAYQ_AUIEigB&biw=1280&bih=631&dpr=2) --- ## 教訓 ## 土地データ怖い <span> "地籍調査は、昭和26年から行われており、その開始から半世紀以上が過ぎています。 しかしながら、平成30年度末時点において約半分の地域で調査が残っています。" http://www.chiseki.go.jp/situation/ --- ## 結論  ## XML(GIS)データあるから大丈夫でしょー ## <span> 大丈夫じゃないです…<!-- .element: class="fragment" data-fragment-index="1" --></span> --- #### 今後(もっとちゃんとした) #### 土地データ必要 ``` 「土地問題解決への社会的要請が高まっている」 ``` ![FOSS4G 2019 NIIGATA 平本さんスライドより](https://i.imgur.com/1dQYKoM.png) https://geo-news.jp/archives/787

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