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The cookie is used to store the user consent for the cookies in the category "Analytics". The cookies is used to store the user consent for the cookies in the category "Necessary". The cookie is used to store the user consent for the cookies in the category "Other. KML files have either a. KML can be composed of both feature and raster elements including points, lines, polygons, and imagery, as well as related content like graphics, pictures, attributes, and HTML.
KML Version 2. You add KML information to maps and scenes the same way you add other data. The KML file is the source of the layer in the map or scene.
You can use a. Once you've created features within Google Earth and examined the KML code Google Earth generates, you'll notice how styles are an important part of how your data is displayed. Power users will want to learn how to define their own styles. Because more than one element can use the same Style, styles defined and used in this way are referred to as shared styles.
If the Style definition is within the same file, precede the Style ID with a sign. Note that it's easiest if your IDs are descriptive strings so that you can easily tell what their effect is. Here's an example of a style "transBluePoly" that defines a transparent blue color for the polygon faces and a line width of 1.
This style is used by Building 41 in the Google Campus example in the Polygons folder :. The Document defines two styles, one for the "normalPlacemark" and one for the "highlightPlacemark" shown when the cursor rolls over the Icon.
There are two icon states: normal and highlight. Screen overlays cannot be authored directly within Google Earth and are thus more difficult to create than ground overlays. As an example, enable the "Absolute Positioning: Top left" folder in the KML Samples file and you will see a screen overlay at the top left of the view window. This was created with the following KML code:.
In this case, the top-left corner of the image 0,1 has been made coincident with the same point on the screen. Check the other examples in the folder to see how it is possible to obtain other fixed positions, and to create images that size dynamically with screen size. Note that xunits and yunits can also be specified as "pixels" for precision control. For further detail, see the KML 2.
The specified file can be either a local file or a file on a remote server. In their simplest form, network links are a useful way to split one large KML file into smaller, more manageable files on the same computer. So far, all of our examples have required that the KML code be delivered to Google Earth from the local machine.
Network links give you the power to serve content from a remote location and are commonly used to distribute data to large numbers of users. In this way, if the data needs to be amended, it has to be changed only at the source location, and all users receive the updated data automatically. With some knowledge of a scripting language such as PHP, Python, or Perl, you can create a script that delivers a stream or file of KML data to each network link.
The response must be valid KML. For complex applications, proper error handling is very important. Tip: A simple way to handle errors is to parse the server's error as the text for a folder name. This is more informative and more user-friendly than letting the connection drop.
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