从 Google Earth 图层中提取信息
我需要获取所有交通地点的纬度和经度。 Google 地球有一个交通图层，我可以导出该图层信息吗？具体来说，我正在寻找美国的所有机场位置，并在 Matlab 中用它做一些事情。
I need to get the latitude and longitude of all the transportation locations. Google Earth has a transportation layer, can I export this layer information? Specifically I am looking for all the airport locations in the United States and to do some stuff with it in Matlab.
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我不相信你可以。这些免费或低成本的地图系统（桌面和在线）具有来自继承数据提供商的严格的分许可约束。
对于机场，您尝试过 FAA 吗？ Geonames 数据库也应该有这些信息，但我不知道它有多完整。
I don't believe you can. These free or low cost mapping systems (desktop and online) have restrictive sub-licensing constrains from heir data providers.
For airports, have you tried the FAA? Also the Geonames database should have this information but I don't know how complete it is.
您无法导出 Google 地球的数据图层，但可以访问 Google 用于其图层的许多相同的公共数据源。机场位置有很多数据源。
这是由国际航空运输协会（IATA）更新和指定的机场代码在线查找服务。
http://www.iata.org/index.htm
这里有一个讨论，列出了几个来源，包括全球 ICAO 机场的 zip 文件，包含 43,000 多个 .CSV 格式（逗号分隔值）。
http://www.airport-data.com/forums/topic4054.html
如果上述资源不是您想要的，那么四处搜索，您就会找到您所需要的。
You cannot export Google Earth's data layers but you can access many of the same public data sources that Google uses for its layers. There are a lot of data sources for airport locations.
Here is an online lookup service for airport codes which is updated and designated by the International Air Transport Association (IATA).
http://www.iata.org/index.htm
And here's a discussion listing several sources including a zip file with ICAO airports world-wide with 43,000+ in .CSV format (comma separated value).
http://www.airport-data.com/forums/topic4054.html
If the above resources aren't what you're looking for then search around and you'll find exactly what you need.