Geographic MetaData (GMD) extensible markup language is a component of the XML Schema Implementation of Geographic Information Metadata documented in ISO/TS 19139:2007. GMD includes all the definitions of http://www.isotc211.org/2005/gmd namespace. The root document of this namespace is the file gmd.xsd. This extent.xsd schema implements the UML conceptual schema defined in A.3.1 of ISO 19115:2003 and the associated corrigendum. It contains the implementation of the following classes: EX_TemporalExtent, EX_VerticalExtent, EX_BoundingPolygon, EX_Extent, EX_GeographicExtent, EX_GeographicBoundingBox, EX_SpatialTemporalExtent, EX_GeographicDescription. |