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Google Map API yao on 25 二月 2009 03:08 下午

網友力量大-Google Map API支援網友編輯的圖層

昨天在看Google Map API的網址時,發現居然多了G_MAPMAKER_NORMAL_MAPG_MAPMAKER_HYBRID_MAP兩個圖層,如下圖。
2009-02-25_143540

原來這就是做用者用Google Map Maker畫出來的地圖,不是每個國家都有對應的圖資,有的國家有政治的因素或者安全性的問題,根本不讓外國人有詳細的地圖資料。Google透過網友的力量解決這個問題,也讓Google Map的內容更豐富,網友可以透過Google Map查閱這些資料。除此之外,Google最近也開始嘗試,讓各國的人可以在地圖上加上自己語言的屬性。這種模式應該算是人腦運算的高度運用。Google Map Maker的編輯介面如下。

2009-02-25_143653

這些國家分別是不丹,玻利維亞,柬埔寨,多米尼加,多米尼加共和國,關島,冰島,毛里求斯,巴拉圭,菲律賓,塞內加爾,塞舌爾,斯里蘭卡,塔吉克斯坦,越南及津巴布韋。

越南地圖

mm_vietnam

根據使用者編輯的而作的影片如下

更多的 Google Map Maker可以參考

http://www.google.com/mapmaker

http://sites.google.com/site/mapmakeruserhelp/home

Open Steet Map

另外還有其它類的專案,如Open Steet Map(OSM),OSM也是使用者貢獻力量來產生的圖資。跟Google Map最大的不同是,OSM的圖資是開放的;而Google的圖資卻受到Google的政策保護。此外,有一個名為「CloudMade」的專案開發很多工具及API讓使用者可以更便利地參與Open Steet Map計畫或運用Open Steet Map的資料。

Open Steet Map網址 http://www.openstreetmap.org/
台灣Open Steet Map網址 http://osm.ossug.org/

Volunteer Geographic Information

在GIS領域則稱這樣由廣大自願者提供的地理資訊為volunteer geographic information。過去圖資供應商透過遙測影像、路面調查等方式來建立路網資料,然後將資料銷售給GIS應用廠商,而不直接面對最終的消費者,但近來衛星定位導航裝置及手機大廠(例如TomTom, Nokia)積極收購GIS圖資供應商,讓路網圖資與導航裝置產業緊密結合,也就是說透過車上的導航裝置(PND)串連了圖資供應者與圖資消費者,目前這些汽車導航及手機大廠都在探索如何運用volunteer geographic information的概念,利用廣大的汽車導航或手機導航用戶來協助收集及更新路網圖資,減少圖資更新的成本及加速圖資更新的效率。可以進一步參考Susan Smith的一篇文章:Community Data Informs the World’s Highways

補充資訊(2009/5/26):

Google宣布在推出Google Map Maker 服務後,完成64個國家新增道路資訊,該資料已經正式在Google Map及Google Earth上提供一般大眾使用,可以詳閱報導,這些國家分別為:

American Samoa, Anguilla, Armenia, Aruba, Azerbaijan, Bahrain, Belize, Benin, Botswana, Burkina Faso, Burundi, Cameroon, Cape Verde, Cayman Islands, Central African Republic, Chad, Christmas Island, Cocos (Keeling) Islands, Comoros, Cook Islands, Costa Rica, Cote d’Ivoire, Democratic Republic of the Congo, Djibouti, El Salvador, Eritrea, Ethiopia, Gabon, Gambia, Ghana, Guadeloupe, Guinea, Iran, Kyrgyzstan, Madagascar, Malawi, Martinique, Mauritania, Mongolia, Montserrat, Mozambique, Myanmar (Burma), Nauru, Netherlands Antilles, Niger, Nigeria, Niue, Northern Mariana Islands, Pakistan, Reunion, Saint Vincent and the Grenadines, Samoa, Sao Tome and Principe, Sierra Leone, Solomon Islands, Somalia, Togo, Tokelau, Tonga, Turkmenistan, Tuvalu, Uzbekistan, Wallis and Futuna, Zambia.

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