Google Earth Blog

The Google Earth Network Link

One of the most powerful features within Google Earth is the feature called the network link. Within this network you can find the best casinos you may find across the internet. The network link enables someone to tap into information in another file somewhere either on your local machine, or on a computer somewhere else on the Internet. The information can basically be anything the Google Earth files (KML files) can support. For example: Placemarks, lines, polygons, image overlays, and even 3D models. Network links also enable you to better handle KML files and keep the time it takes to start up Google Earth faster.
A network link simply points to another KML file somewhere. That file can be generated by a program running on another computer. The network link can automatically refresh based on a setting within the network link. You can update as fast as once a second, or just have it update once. You can also update network links based on when the user moves their view in Google Earth (this is called View Based Refresh).
Let me illustrate the power of the network link with some examples:

Besides providing the powerful ability to provide you with current and dynamic information, the network link can help you manage your Google Earth data much more efficiently. If you save a lot of your favorite KML files in your My Places it can slow down how fast Google Earth starts. This is because all the files in your My Places have to be loaded when you start. You can still keep pointers to all your favorite files, but keep the file size much smaller by using the network link. First, save each of your favorite KML content from your My Places to a file on your local machine, or, better yet, find the URL of the original file on the Internet. Then create a network link (menu “Add->Network link…“), and either put the local file location or the URL of the KML file in the Link field. Give the network link an appropriate name and description. Before you exit Google Earth, decide whether you want the network link turned on or not. Your My Places will now only be a couple hundred bytes for each network link and will only load more information if you leave it turned on the next time you start Google Earth. You can also have network links load other network links to reduce the size of your My Places even more. But, I’ll save tips on doing that for a future post.
More reading on the network link:

About Frank Taylor

Frank Taylor started the Google Earth Blog in July, 2005 shortly after Google Earth was first released. He has worked with 3D computer graphics and VR for many years and was very impressed with this exciting product. Frank completed a 5.5 year circumnavigation of the earth by sailboat in June 2015 which you can read about at Tahina Expedition, and is a licensed pilot, backpacker, diver, and photographer.

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