A style defined within a Feature is called an "inline style" and applies only to the Feature that contains it. In cases where a style element is defined both in a shared style and in an inline style for a Feature—that is, a Folder, GroundOverlay, NetworkLink, Placemark, or ScreenOverlay—the value for the Feature's inline style takes precedence over the value for the shared style.
A given KML Feature can contain a combination of these types of custom data. Smooth FlyTos allow for an unbroken flight from point to point to point and on. An unbroken series of smooth FlyTos will begin and end at zero velocity, and will not slow at each point. Bounce FlyTos each begin and end at zero velocity. Possible values are clampToGround - default Indicates to ignore the altitude specification and drape the overlay over the terrain.
For example, if you set the altitude of an overlay to 10 meters with an absolute altitude mode, the overlay will appear to be at ground level if the terrain beneath is also 10 meters above sea level. If the terrain is 3 meters above sea level, the overlay will appear elevated above the terrain by 7 meters.
If the point is on land rather than at sea, the overlay will be positioned on the ground. The default is 0 north. Rotations are specified in a counterclockwise direction. If no values are specified for x and y, the lower left corner of the icon palette is assumed to be the lower-left corner of the icon to use. The x and y values can be specified in three different ways: as pixels "pixels" , as fractions of the icon "fraction" , or as inset pixels "insetPixels" , which is an offset in pixels from the upper right corner of the icon.
The x and y positions can be specified in different ways—for example, x can be in pixels and y can be a fraction. The origin of the coordinate system is in the lower left corner of the icon. A value of fraction indicates the x value is a fraction of the icon.
A value of pixels indicates the x value in pixels. A value of insetPixels indicates the indent from the right edge of the icon. A value of fraction indicates the y value is a fraction of the icon. A value of pixels indicates the y value in pixels. A value of insetPixels indicates the indent from the top edge of the icon. This offset allows you to move an entire LinearRing up or down as a unit without modifying all the individual coordinate values that make up the LinearRing. Although the LinearRing is displayed using the altitude offset value, the original altitude values are preserved in the KML file.
Units are in meters. Specifies whether to connect the LinearRing to the ground. To extrude this geometry, the altitude mode must be either relativeToGround , relativeToSeaFloor , or absolute.
Only the vertices of the LinearRing are extruded, not the center of the geometry. The vertices are extruded toward the center of the Earth's sphere. Specifies whether to allow the LinearRing to follow the terrain.
Very large LinearRings should enable tessellation so that they follow the curvature of the earth otherwise, they may go underground and be hidden. For example, if the ground elevation of a location is exactly at sea level and the altitude for a point is set to 9 meters, then the elevation for the icon of a point placemark elevation is 9 meters with this mode. However, if the same coordinate is set over a location where the ground elevation is 10 meters above sea level, then the elevation of the coordinate is 19 meters.
A typical use of this mode is for placing telephone poles or a ski lift. For example, if you set the altitude of a coordinate to 10 meters with an absolute altitude mode, the icon of a point placemark will appear to be at ground level if the terrain beneath is also 10 meters above sea level. If the terrain is 3 meters above sea level, the placemark will appear elevated above the terrain by 7 meters. A typical use of this mode is for aircraft placement.
If the point is on land rather than at sea, the point will be positioned on the ground. The altitude component is optional. The last coordinate must be the same as the first coordinate.
Coordinates are expressed in decimal degrees only. This offset allows you to move an entire LineString up or down as a unit without modifying all the individual coordinate values that make up the LineString. Although the LineString is displayed using the altitude offset value, the original altitude values are preserved in the KML file.
Specifies whether to connect the LineString to the ground. The vertices in the LineString are extruded toward the center of the Earth's sphere. Specifies whether to allow the LineString to follow the terrain. Very large LineStrings should enable tessellation so that they follow the curvature of the earth otherwise, they may go underground and be hidden.
LineStrings drawn first may be partially or fully obscured by LineStrings with a later draw order. A draw order value may be necessary if dual-colored lines are crossing each other—for example, for showing freeway interchanges.
Example The following example shows a 50 percent opaque red line with a width of 4 pixels. When a file is fetched, the URL that is sent to the server is composed of three pieces of information: the href Hypertext Reference that specifies the file to load.
Can be one of the following: never default - Ignore changes in the view. For example, in Google Earth, the user right-clicks and selects Refresh in the Context menu. A value less than 1 specifies to use less than the full view screen. A value greater than 1 specifies to fetch an area that extends beyond the edges of the current view.
You can also specify a custom set of viewing parameters to add to the query string. If you supply a format string, it is used instead of the BBOX information. If you also want the BBOX information, you need to add those parameters along with the custom parameters. Google Earth substitutes the appropriate current value at the time it creates the query string. Possible values are: check default - The Feature's visibility is tied to its item's checkbox.
This setting is useful for Containers or Network Links containing large amounts of data. A checkbox allows the user to toggle visibility of the child objects in the viewer. Color and opacity values are expressed in hexadecimal notation. Icons associated with the open and closed modes are used for Folders and Network Links. Icons associated with the error and fetching0 , fetching1 , and fetching2 modes are used for Network Links.
Possible values are open , closed , error , fetching0 , fetching1 , and fetching2. These values can be combined by inserting a space between two values no comma. Interpreted according to the LookAt's altitude mode. See diagram below. Values range from 0 to 90 degrees. If the point is on land rather than at sea, the LookAt will be positioned on the ground. The maximum number of triangles allowed is Google Earth does not support animation or skinning.
Google Earth does not support external geometry references. If the point is on land rather than at sea, the Model will be positioned on the ground.
Latitude and longitude measurements are standard lat-lon projection with WGS84 datum. See diagrams below. A value of 0 the default equals North. A positive rotation is clockwise around the z axis and specified in degrees from 0 to A positive rotation is clockwise around the x axis and specified in degrees from 0 to A positive rotation is clockwise around the y axis and specified in degrees from 0 to This element allows you to move and rename texture files without having to update the original Collada file that references those textures.
This reference can be a relative reference to an image file within the. In Google Earth, if this mapping is not supplied, the following rules are used to locate the textures referenced in the Collada. Relative path: If the texture name includes a relative path for example,.. Values are: relativeToSeaFloor - Interprets the altitude as a value in meters above the sea floor. If the point is above land rather than sea, the altitude will be interpreted as being above the ground. When the default value 0 is used, the icon or model stops at the end of one track and then jumps to the start of the next one.
A value of 0 leaves the visibility of features within the control of the Google Earth user. Set the value to 1 to reset the visibility of features each time the NetworkLink is refreshed. When the file is first loaded into Google Earth, the user can clear the check box next to the item to turn off display in the 3D viewer.
This parameter allows servers to throttle fetches of a particular file and to tailor refresh rates to the expected rate of change to the data. For example, a user might set a link refresh to 5 seconds, but you could set your minimum refresh period to to limit refresh updates to once every hour.
The default value of -1 indicates not to terminate the session explicitly. You can use this data in your script to provide more intelligent handling on the server side, including version querying and conditional file delivery. The message appears when the network link is first loaded into Google Earth, or when it is changed in the network link control.
The order of expression is alpha, blue, green, red aabbggrr. For opacity, 00 is fully transparent and ff is fully opaque. This location can be either on a local file system or on a web server. This element is useful if your photo has been rotated and deviates slightly from a desired horizontal view.
Specifying the field of view is analogous to specifying the lens opening in a physical camera. A small field of view, like a telephoto lens, focuses on a small part of the scene. A large field of view, like a wide-angle lens, focuses on a large part of the scene. The field of view for a PhotoOverlay is defined by four planes, each of which is specified by an angle relative to the view vector. Each image in the pyramid is subdivided into tiles, so that only the portions in view need to be loaded.
Google Earth calculates the current viewpoint and loads the tiles that are appropriate to the user's distance from the image. As the viewpoint moves closer to the PhotoOverlay, Google Earth loads higher resolution tiles. This example uses a Folder titled "Ground Overlays" as a mechanism to group and label its contents.
Bounding values are given for the north and south latitudes, and east and west longitudes. In addition, rotation values are given for images whose y -axis doesn't coincide with grid north.
This example uses a JPEG image for the overlay. Many different types of paths can be created in Google Earth, and it is easy to be very creative with your data. Take a look at the "Absolute Extruded" example in the Paths folder and you can see how the shape has been generated by the following code:. Notice how it is really just one line drawn at altitude above the ground. You can use Polygons to create simple buildings and other shapes. The Pentagon example is generated by drawing simple inner and outer shells and then extruding them down to the ground.
Here is the code :. This section describes some of the KML elements that must be authored using a text editor, such as shared styles for geometry, highlighted icons for Placemarks, and screen overlays.
Authoring KML "by hand" is a bit more advanced than using the Google Earth interface to create and modify features, but with a small amount of practice, most users are comfortable editing KML files to add these effects.
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. When you go to save an image, it gives you options for a title box, legend box, scale, compass and HTML box.
The "Map Options" button that appears below the tool bar lets you turn those things on or off, and lets you select the desired image resolution before saving your map view to a JPG image. If you have a KML on the map when you go to save an image, you'll see that the Legend is auto-generated from the features in your KML see image below. If you click on the Legend box, you can select which items to include or not It works pretty well.
The caveat is that the only useful thing you can do with it is export it as part of a larger image. There's no easy way to get that legend, and then somehow add it to your KML for viewing with the map. So if this is for generating a map image with legend, then you're good to go Stack Overflow for Teams — Collaborate and share knowledge with a private group. Create a free Team What is Teams? Collectives on Stack Overflow. Comments Your Name optional Post. Better results and improved feedback when there are no results found.
Maps you can make use of Make KML. By on 2nd March dimpal, can explain what you mean in more detail please? By Free Map Tools on 15th February how to create a polygon by kml file By dimpal on 14th February Angelo, this is isn't possible right now but it has been added to the Future Ideas and Features list. Can we create an area?
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