For example, each point feature in a KML file is inside a tag. Screen overlays are not part of the geographic display but are useful as information displays.Īs KML is an XML-based format, its structure is based on various tags. Examples of ground overlays include aerial imagery, feature layers, and maps converted to an image.Ī map or screen graphic such as a logo, legend, or picture.
KMZ files can be viewed and worked in all the same ways as KML files.Ī point feature or location on a point, line, or polygon feature that can be clicked to display pop-up information.Ī raster or image that is typically georeferenced and draped on the earth's surface. KML terminologyĪ compressed or zipped KML file. None of the new features in the KML 2.2 specification are currently supported, including time animation, photo overlays, and schema tags. All of the features of the KML 2.0 and 2.1 specifications are supported. Using geoprocessing tools, you can convert a map layer to KML and convert KML to an ArcGIS geodatabase so you can view, edit, and analyze the geographic data contained in any KML file. A single KML file can contain features of different types as well as imagery. KML can also contain related content such as graphics, pictures, attributes, and HTML, whereas datasets in ArcGIS are typically seen as separate and homogeneous elements (for example, point feature classes can only contain points rasters can only contain cells or pixels and not features). KML can be composed of point, line, polygon features, and raster imagery. kmz (for compressed or zipped KML files) file extension. KML is a common format for sharing geographic data with non-GIS users, as it can be easily delivered on the internet and viewed in a number of free applications. Keyhole Markup Language (KML) is an XML-based format for storing geographic data and associated content and is an official Open Geospatial Consortium (OGC) standard.
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